diff --git a/app/game-frontend/e2e/commandArguments.spec.ts b/app/game-frontend/e2e/commandArguments.spec.ts
index d9c410a2..e85d8d8b 100644
--- a/app/game-frontend/e2e/commandArguments.spec.ts
+++ b/app/game-frontend/e2e/commandArguments.spec.ts
@@ -3601,3 +3601,114 @@ test('NPC prefixes stay single in chief command cards', async ({ page }, testInf
         await page.screenshot({ path: testInfo.outputPath(`npc-chief-prefix-${width}.png`), fullPage: true });
     }
 });
+
+for (const width of [1200, 390]) {
+    test.describe(`target search viewport ${width}`, () => {
+        test.use({ isMobile: width < 500, hasTouch: width < 500 });
+        test(`target search preserves selection and searches Korean initials in both editors at ${width}px`, async ({
+            page,
+        }, testInfo) => {
+            const requests = await install(page);
+            await page.setViewportSize({ width, height: 900 });
+            await page.goto(gamePath('/'));
+            const initialScale = await page.evaluate(() => visualViewport?.scale);
+            await page.getByRole('button', { name: '1턴 명령 입력', exact: true }).click();
+            let picker = page.getByTestId('command-picker');
+            await picker.getByRole('button', { name: /화계/ }).click();
+            let form = picker.getByTestId('command-argument-form');
+            const toggle = form.getByRole('button', { name: '검색 꺼짐', exact: true });
+            await expect(form.locator('input[type=search]')).toHaveCount(0);
+            await toggle.click();
+            let input = form.locator('input[type=search]');
+            await expect(input).not.toBeFocused();
+            await expect(input).toHaveCSS('font-size', '16px');
+            await input.fill('ㅎㅊ');
+            let results = form.getByTestId('city-target-list');
+            await expect(results.locator('button')).toHaveCount(1);
+            await expect(results).toContainText('허창');
+            await results.getByRole('button').click();
+            await expect(form.locator('#command-arg-destCityId')).toHaveValue('2');
+            await input.fill('없는도시');
+            await expect(results).toContainText('검색 결과가 없습니다.');
+            await expect(form.locator('#command-arg-destCityId')).toHaveValue('2');
+            await form.getByRole('button', { name: '지우기', exact: true }).click();
+            await expect(results.locator('button')).toHaveCount(3);
+            await input.fill('GC');
+            await expect(results.locator('button')).toHaveCount(1);
+            await input.press('Enter');
+            await expect(input).not.toBeFocused();
+            await expect(picker).toBeVisible();
+            await form.getByRole('button', { name: '검색 켜짐', exact: true }).click();
+            await expect(input).toHaveCount(0);
+            await expect(form.locator('#command-arg-destCityId')).toHaveValue('2');
+            await picker.getByRole('button', { name: '입력', exact: true }).click();
+            await expect.poll(() => JSON.stringify(requests)).toContain('"destCityId":2');
+
+            await page.goto(gamePath('/chief-center'));
+            await page.getByRole('button', { name: '1턴 명령 입력', exact: true }).click();
+            picker = page.getByTestId('command-picker');
+            await picker.getByRole('button', { name: /^(?:국가:)?인사$/, exact: true }).click();
+            await picker.getByRole('button', { name: /발령/ }).click();
+            form = picker.getByTestId('command-argument-form');
+            await form.getByRole('button', { name: '검색 꺼짐', exact: true }).click();
+            const generalSearch = form.locator('#command-search-destGeneralId');
+            const citySearch = form.locator('#command-search-destCityId');
+            await generalSearch.fill('ㅊㄹㄷ');
+            await expect(form.getByTestId('general-target-list')).toContainText('청룡대');
+            await generalSearch.fill('ㄱㅇ');
+            await citySearch.fill('ㅎㅊ');
+            await expect(form.getByTestId('general-target-list').locator('button')).toHaveCount(1);
+            await expect(form.getByTestId('city-target-list').locator('button')).toHaveCount(1);
+            await form.getByTestId('general-target-list').getByRole('button').click();
+            await form.getByTestId('city-target-list').getByRole('button').click();
+            await expect(form.locator('#command-arg-destGeneralId')).toHaveValue('2');
+            await expect(form.locator('#command-arg-destCityId')).toHaveValue('2');
+            await page.evaluate(() => document.fonts.ready);
+            const geometry = await form.evaluate((element) => ({
+                html: element.outerHTML,
+                inputs: [...element.querySelectorAll('input[type=search]')].map((input) => {
+                    const rect = input.getBoundingClientRect();
+                    return {
+                        x: rect.x,
+                        right: rect.right,
+                        width: rect.width,
+                        fontSize: getComputedStyle(input).fontSize,
+                    };
+                }),
+                viewport: { width: innerWidth, scale: visualViewport?.scale },
+            }));
+            expect(geometry.inputs.every((input) => input.x >= 0 && input.right <= geometry.viewport.width)).toBe(true);
+            expect(geometry.viewport.scale).toBe(initialScale);
+            await writeFile(testInfo.outputPath(`search-${width}.json`), JSON.stringify(geometry, null, 2));
+            await form.screenshot({ path: testInfo.outputPath(`search-${width}.png`) });
+            await picker.getByRole('button', { name: '입력', exact: true }).click();
+            await expect.poll(() => JSON.stringify(requests)).toContain('"destGeneralId":2,"destCityId":2');
+            await page.reload();
+            await page.getByRole('button', { name: '2턴 명령 입력', exact: true }).click();
+            picker = page.getByTestId('command-picker');
+            await picker.getByRole('button', { name: /^(?:국가:)?외교$/, exact: true }).click();
+            await picker.getByRole('button', { name: /선전포고/ }).click();
+            form = picker.getByTestId('command-argument-form');
+            await expect(form.getByRole('button', { name: '검색 켜짐', exact: true })).toHaveAttribute(
+                'aria-pressed',
+                'true'
+            );
+            input = form.locator('input[type=search]');
+            await expect(input).toHaveValue('');
+            await expect(input).not.toBeFocused();
+            await input.fill('ㅂㄱㅊㄱ');
+            results = form.getByTestId('nation-target-list');
+            await expect(results.locator('button')).toHaveCount(1);
+            await expect(results).toContainText('현재 불가');
+            await results.getByRole('button').click();
+            await expect(form.locator('#command-arg-destNationId')).toHaveValue('3');
+            await input.fill('적국');
+            await expect(results.locator('button')).toHaveCount(1);
+            await results.getByRole('button').click();
+            await expect(form.locator('#command-arg-destNationId')).toHaveValue('2');
+            await input.press('Escape');
+            await expect(input).toHaveValue('');
+            await expect(picker).toBeVisible();
+        });
+    });
+}
diff --git a/app/game-frontend/src/components/main/CommandArgumentForm.vue b/app/game-frontend/src/components/main/CommandArgumentForm.vue
index 34bfec2b..95b0eb82 100644
--- a/app/game-frontend/src/components/main/CommandArgumentForm.vue
+++ b/app/game-frontend/src/components/main/CommandArgumentForm.vue
@@ -1,5 +1,7 @@
 <script setup lang="ts">
 import { computed, reactive, watch, type CSSProperties } from 'vue';
+import { useStorage } from '@vueuse/core';
+import { buildCommandTargetSearchIndex, matchesCommandTargetSearch } from '../../utils/commandTargetSearch';
 import MapViewer from './MapViewer.vue';
 import NationColorSelect from './NationColorSelect.vue';
 import { commandArgumentPresentation, resolveCommandArgumentMapTarget } from '../command/commandArgumentPresentation';
@@ -67,6 +69,48 @@ const optionsFor = (field: CommandInputField): CommandOption[] => {
     return props.options[field.optionSource];
 };
 
+const searchEnabled = useStorage('sam.core.commandTargetSearch', false);
+const searchQueries = reactive<Record<string, string>>({});
+const isSearchable = (field: CommandInputField): boolean =>
+    field.kind === 'select' && ['generals', 'cities', 'nations'].includes(field.optionSource ?? '');
+const hasSearchableFields = computed(() => props.fields.some(isSearchable));
+// 후보나 정렬이 바뀔 때만 인덱스를 갱신하고 키 입력은 기존 인덱스를 검색한다.
+const targetIndexes = computed(
+    () =>
+        new Map(
+            props.fields.filter(isSearchable).map((field) => [
+                field.key,
+                optionsFor(field).map((option) => ({
+                    option,
+                    index: [option.label, option.description ?? '']
+                        .filter(Boolean)
+                        .flatMap(buildCommandTargetSearchIndex),
+                })),
+            ])
+        )
+);
+const filteredTargets = computed(
+    () =>
+        new Map(
+            [...targetIndexes.value].map(([key, entries]) => [
+                key,
+                entries
+                    .filter(
+                        (entry) =>
+                            !searchEnabled.value || matchesCommandTargetSearch(entry.index, searchQueries[key] ?? '')
+                    )
+                    .map((entry) => entry.option),
+            ])
+        )
+);
+const visibleOptionsFor = (field: CommandInputField): CommandOption[] =>
+    filteredTargets.value.get(field.key) ?? optionsFor(field);
+const clearSearchQueries = () => {
+    for (const key of Object.keys(searchQueries)) delete searchQueries[key];
+};
+watch(searchEnabled, clearSearchQueries);
+watch(() => props.commandKey, clearSearchQueries);
+
 const defaultValue = (field: CommandInputField): unknown => {
     if (field.kind === 'hidden') return field.constValue;
     if (field.defaultValue !== undefined) return field.defaultValue;
@@ -431,6 +475,15 @@ watch(
         <div v-if="resourceSummary.length" class="resource-summary" data-testid="command-resource-summary">
             <span v-for="entry in resourceSummary" :key="entry">{{ entry }}</span>
         </div>
+        <button
+            v-if="hasSearchableFields"
+            type="button"
+            class="legacy-button legacy-button--secondary target-search-toggle"
+            :aria-pressed="searchEnabled"
+            @click="searchEnabled = !searchEnabled"
+        >
+            {{ searchEnabled ? '검색 켜짐' : '검색 꺼짐' }}
+        </button>
         <div v-for="field in visibleFields" :key="field.key" class="argument-row">
             <label :for="`command-arg-${field.key}`">{{ field.label }}</label>
             <input
@@ -555,13 +608,52 @@ watch(
                 <span>{{ selectedOptionFor(field)?.description }}</span>
             </div>
             <div
-                v-if="showOptionCards(field)"
+                v-if="searchEnabled && isSearchable(field)"
+                class="target-search"
+                :data-testid="`target-search-${field.key}`"
+            >
+                <label :for="`command-search-${field.key}`">{{ field.label }} 검색</label>
+                <input
+                    :id="`command-search-${field.key}`"
+                    v-model="searchQueries[field.key]"
+                    type="search"
+                    inputmode="search"
+                    enterkeyhint="done"
+                    placeholder="이름·정보 또는 초성"
+                    autocomplete="off"
+                    :spellcheck="false"
+                    @keydown.enter.prevent="($event.target as HTMLInputElement).blur()"
+                    @keydown.esc.stop="
+                        searchQueries[field.key] = '';
+                        ($event.target as HTMLInputElement).blur();
+                    "
+                />
+                <button
+                    type="button"
+                    class="legacy-button legacy-button--secondary"
+                    @click="searchQueries[field.key] = ''"
+                >
+                    지우기
+                </button>
+                <small role="status"
+                    >검색 결과 {{ visibleOptionsFor(field).length }}개 / {{ optionsFor(field).length }}개</small
+                >
+            </div>
+            <div
+                v-if="showOptionCards(field) || (searchEnabled && isSearchable(field))"
                 class="target-option-list"
                 :class="{ 'assignment-target-list': commandKey === 'che_발령' && field.optionSource === 'generals' }"
-                :data-testid="field.optionSource === 'nations' ? 'nation-target-list' : 'general-target-list'"
+                :data-testid="
+                    field.optionSource === 'nations'
+                        ? 'nation-target-list'
+                        : field.optionSource === 'cities'
+                          ? 'city-target-list'
+                          : 'general-target-list'
+                "
             >
+                <span v-if="!visibleOptionsFor(field).length" class="target-search-empty">검색 결과가 없습니다.</span>
                 <button
-                    v-for="option in optionsFor(field)"
+                    v-for="option in visibleOptionsFor(field)"
                     :key="String(option.value)"
                     type="button"
                     class="target-option"
@@ -586,6 +678,30 @@ watch(
 </template>
 
 <style scoped>
+.target-search-toggle {
+    margin: 6px 8px;
+}
+.target-search {
+    grid-column: 1 / -1;
+    display: flex;
+    flex-wrap: wrap;
+    align-items: center;
+    gap: 6px;
+    padding: 4px 8px;
+}
+.target-search input {
+    flex: 1 1 140px;
+    width: 140px;
+    margin: 0;
+    font-size: 16px;
+}
+.target-search small {
+    flex-basis: 100%;
+}
+.target-search-empty {
+    padding: 8px;
+}
+
 .command-argument-form {
     border: 1px solid rgba(201, 164, 90, 0.35);
     font-size: 0.75rem;
diff --git a/app/game-frontend/src/utils/commandTargetSearch.ts b/app/game-frontend/src/utils/commandTargetSearch.ts
new file mode 100644
index 00000000..9a2c8fcb
--- /dev/null
+++ b/app/game-frontend/src/utils/commandTargetSearch.ts
@@ -0,0 +1,47 @@
+// Ref convertSearch초성: 원문, 두벌식 초성, 한글 초성, 두 단계 IME 겹자음 인덱스.
+const initials = 'ㄱㄲㄴㄷㄸㄹㅁㅂㅃㅅㅆㅇㅈㅉㅊㅋㅌㅍㅎ';
+const keyboard = 'rRseEfaqQtTdwWczxvg';
+const compoundPairs: Record<string, string> = {
+    ㄱㅅ: 'ㄳ',
+    ㄴㅈ: 'ㄵ',
+    ㄴㅎ: 'ㄶ',
+    ㄹㅂ: 'ㄼ',
+    ㄹㄱ: 'ㄺ',
+    ㄹㅅ: 'ㄽ',
+    ㄹㅁ: 'ㄻ',
+    ㄹㅎ: 'ㅀ',
+    ㄹㅌ: 'ㄾ',
+    ㄹㅍ: 'ㄿ',
+    ㅂㅅ: 'ㅄ',
+};
+const doublePairs: Record<string, string> = { ㄱㄱ: 'ㄲ', ㄷㄷ: 'ㄸ', ㅂㅂ: 'ㅃ', ㅅㅅ: 'ㅆ', ㅈㅈ: 'ㅉ' };
+const normalize = (text: string): string => text.normalize('NFC').toLowerCase().replace(/\s+/gu, '');
+const combine = (text: string, doubles: boolean): string => {
+    const chars = [...text];
+    const result: string[] = [];
+    for (let index = 0; index < chars.length; index += 1) {
+        const pair = chars[index]! + (chars[index + 1] ?? '');
+        const combined = compoundPairs[pair] ?? (doubles ? doublePairs[pair] : undefined);
+        result.push(combined ?? chars[index]!);
+        if (combined) index += 1;
+    }
+    return result.join('');
+};
+
+export const buildCommandTargetSearchIndex = (text: string): string[] => {
+    const compact = text.normalize('NFC').replace(/\s+/gu, '');
+    let hangul = '';
+    let alphabet = '';
+    for (const character of compact) {
+        const code = character.charCodeAt(0) - 0xac00;
+        const index = code >= 0 && code < 11172 ? Math.floor(code / 588) : -1;
+        hangul += index >= 0 ? initials[index] : character;
+        alphabet += index >= 0 ? keyboard[index] : character;
+    }
+    return [...new Set([compact, alphabet, hangul, combine(hangul, false), combine(hangul, true)].map(normalize))];
+};
+
+export const matchesCommandTargetSearch = (index: readonly string[], query: string): boolean => {
+    const normalized = normalize(query);
+    return index.some((text) => text.includes(normalized));
+};
diff --git a/app/game-frontend/test/commandTargetSearch.test.ts b/app/game-frontend/test/commandTargetSearch.test.ts
new file mode 100644
index 00000000..124389d4
--- /dev/null
+++ b/app/game-frontend/test/commandTargetSearch.test.ts
@@ -0,0 +1,21 @@
+import assert from 'node:assert/strict';
+import { test } from 'node:test';
+import { buildCommandTargetSearchIndex, matchesCommandTargetSearch } from '../src/utils/commandTargetSearch.ts';
+
+void test('Ref name index includes keyboard initials and both IME compound levels', () => {
+    assert.deepEqual(buildCommandTargetSearchIndex('강서'), ['강서', 'rt', 'ㄱㅅ', 'ㄳ']);
+    assert.deepEqual(buildCommandTargetSearchIndex('사서'), ['사서', 'tt', 'ㅅㅅ', 'ㅆ']);
+    assert.deepEqual(buildCommandTargetSearchIndex('강서사서'), ['강서사서', 'rttt', 'ㄱㅅㅅㅅ', 'ㄳㅅㅅ', 'ㄳㅆ']);
+});
+
+void test('literal, initial, keyboard and normalized queries preserve meaningful distinctions', () => {
+    const index = buildCommandTargetSearchIndex('허창 (적국)');
+    for (const query of ['', '  ', '허창', 'ㅎㅊ', 'GC', '허 창', '적국', 'ㅈㄱ']) {
+        assert.equal(matchesCommandTargetSearch(index, query), true, query);
+    }
+    for (const query of ['업', 'ㅎㄱ', '.*', '[']) assert.equal(matchesCommandTargetSearch(index, query), false, query);
+    assert.equal(matchesCommandTargetSearch(buildCommandTargetSearchIndex('관우'), '관우'), true);
+    assert.equal(matchesCommandTargetSearch(buildCommandTargetSearchIndex('여포NPC'), 'npc'), true);
+    assert.equal(matchesCommandTargetSearch(buildCommandTargetSearchIndex('쌍성'), 'ㅆㅅ'), true);
+    assert.equal(matchesCommandTargetSearch(buildCommandTargetSearchIndex('쌍성'), 'ㅅㅅ'), false);
+});