diff --git a/.github/PULL_REQUEST_TEMPLATE.md b/.github/PULL_REQUEST_TEMPLATE.md
index cc8ee6bc7d..ad9e056ea4 100644
--- a/.github/PULL_REQUEST_TEMPLATE.md
+++ b/.github/PULL_REQUEST_TEMPLATE.md
@@ -1,5 +1,5 @@
 ## 📌𝘐𝘴𝘴𝘶𝘦𝘴
-<!-- PR 제목 끝에 대표 Issue 하나를 `(#N)` 형식으로 적고 아래에도 같은 번호를 연결하세요. 관련된 기존 Issue를 재사용하세요. 관련 Issue가 없을 때만 새로 만들고, 여러 PR이 같은 Issue를 공유해도 됩니다. 이 Issue의 작업을 최종 완료하는 PR에서만 Closes/Fixes/Resolves로 바꾸세요. -->
+<!-- PR 제목 끝에 대표 Issue 하나를 `(#N)` 형식으로 적고 아래에도 같은 번호를 연결하세요. 관련된 기존 Issue를 재사용하세요. 관련 Issue가 없을 때만 새로 만들고, 여러 PR이 같은 Issue를 공유해도 됩니다. 이 Issue의 작업을 최종 완료하는 PR에서만 Closes/Fixes/Resolves로 바꾸세요. 대표 Issue에는 PR 작성자가 담당자로 지정돼 있어야 합니다. -->
 - Refs #
 
 ## 📎𝘞𝘰𝘳𝘬 𝘋𝘦𝘴𝘤𝘳𝘪𝘱𝘵𝘪𝘰𝘯
diff --git a/.github/scripts/pr-issue-link-policy.test.mjs b/.github/scripts/pr-issue-link-policy.test.mjs
index fa302840d8..7b266fe5e7 100644
--- a/.github/scripts/pr-issue-link-policy.test.mjs
+++ b/.github/scripts/pr-issue-link-policy.test.mjs
@@ -11,8 +11,18 @@ const workflowUrl = new URL("../workflows/repository-quality.yml", import.meta.u
 const callerWorkflowUrl = new URL("../workflows/pr-validation.yml", import.meta.url);
 const templateUrl = new URL("../PULL_REQUEST_TEMPLATE.md", import.meta.url);
 
-function pullRequest({ title = "change", body = "", number = 7 } = {}) {
-    return { number, title, body };
+function pullRequest({
+    title = "change",
+    body = "",
+    number = 7,
+    user = { login: "author", type: "User" },
+    labels = [],
+} = {}) {
+    return { number, title, body, user, labels };
+}
+
+function assignedIssue(number, overrides = {}) {
+    return { number, state: "open", assignees: [{ login: "author" }], ...overrides };
 }
 
 function issueLoader(items) {
@@ -64,13 +74,13 @@ test("accepts a same-repository open Issue", async () => {
     const result = await validatePullRequestIssueLink({
         pullRequest: pullRequest({ title: "change (#1228)", body: "Refs #1228" }),
         repository: "Afternote/Afternote-FE",
-        loadIssue: issueLoader(new Map([[1228, { number: 1228, state: "open" }]])),
+        loadIssue: issueLoader(new Map([[1228, assignedIssue(1228)]])),
     });
     assert.deepEqual(result, { issues: [1228], rejected: [] });
 });
 
 test("allows multiple pull requests to share one Issue regardless of closing behavior or state", async () => {
-    const loadIssue = issueLoader(new Map([[601, { number: 601, state: "closed" }]]));
+    const loadIssue = issueLoader(new Map([[601, assignedIssue(601, { state: "closed" })]]));
     const results = await Promise.all([
         validatePullRequestIssueLink({
             pullRequest: pullRequest({ number: 7, title: "first change (#601)", body: "Part of #601" }),
@@ -111,7 +121,7 @@ test("accepts a closed Issue while warning about a missing reference", async ()
     const result = await validatePullRequestIssueLink({
         pullRequest: pullRequest({ title: "change (#2)", body: "Closes #1 and fixes #2" }),
         repository: "Afternote/Afternote-FE",
-        loadIssue: issueLoader(new Map([[2, { number: 2, state: "closed" }]])),
+        loadIssue: issueLoader(new Map([[2, assignedIssue(2, { state: "closed" })]])),
     });
 
     assert.deepEqual(result, {
@@ -120,6 +130,143 @@ test("accepts a closed Issue while warning about a missing reference", async ()
     });
 });
 
+test("rejects an author who is not an assignee of the representative Issue", async () => {
+    await assert.rejects(
+        validatePullRequestIssueLink({
+            pullRequest: pullRequest({ title: "change (#1228)", body: "Refs #1228" }),
+            repository: "Afternote/Afternote-FE",
+            loadIssue: issueLoader(new Map([
+                [1228, assignedIssue(1228, { assignees: [{ login: "someone-else" }] })],
+            ])),
+        }),
+        /작성자 @author는 대표 Issue #1228의 담당자\(@someone-else\)가 아닙니다/,
+    );
+});
+
+test("rejects an unassigned representative Issue", async () => {
+    await assert.rejects(
+        validatePullRequestIssueLink({
+            pullRequest: pullRequest({ title: "change (#1228)", body: "Refs #1228" }),
+            repository: "Afternote/Afternote-FE",
+            loadIssue: issueLoader(new Map([
+                [1228, assignedIssue(1228, { assignees: [] })],
+            ])),
+        }),
+        /대표 Issue #1228에 담당자가 없습니다.*@author를 어사인/,
+    );
+});
+
+test("matches the assignee login case-insensitively among multiple assignees", async () => {
+    const result = await validatePullRequestIssueLink({
+        pullRequest: pullRequest({
+            title: "change (#1228)",
+            body: "Refs #1228",
+            user: { login: "Author", type: "User" },
+        }),
+        repository: "Afternote/Afternote-FE",
+        loadIssue: issueLoader(new Map([
+            [1228, assignedIssue(1228, { assignees: [{ login: "someone-else" }, "author"] })],
+        ])),
+    });
+    assert.deepEqual(result, { issues: [1228], rejected: [] });
+});
+
+test("checks the assignee only on the representative Issue, not other references", async () => {
+    const result = await validatePullRequestIssueLink({
+        pullRequest: pullRequest({ title: "change (#1228)", body: "Refs #1228\nRefs #1229" }),
+        repository: "Afternote/Afternote-FE",
+        loadIssue: issueLoader(new Map([
+            [1228, assignedIssue(1228)],
+            [1229, assignedIssue(1229, { assignees: [{ login: "someone-else" }] })],
+        ])),
+    });
+    assert.deepEqual(result, { issues: [1228, 1229], rejected: [] });
+});
+
+test("exempts bot authors from the assignee check but keeps the Issue link requirement", async () => {
+    const loadIssue = issueLoader(new Map([[12, assignedIssue(12, { assignees: [] })]]));
+    const result = await validatePullRequestIssueLink({
+        pullRequest: pullRequest({
+            title: "chore(deps): bump upload-artifact (#12)",
+            body: "Refs #12",
+            user: { login: "dependabot[bot]", type: "Bot" },
+        }),
+        repository: "Afternote/Afternote-FE",
+        loadIssue,
+    });
+    assert.deepEqual(result, { issues: [12], rejected: [] });
+
+    await assert.rejects(
+        validatePullRequestIssueLink({
+            pullRequest: pullRequest({
+                title: "chore(deps): bump upload-artifact",
+                body: "",
+                user: { login: "dependabot[bot]", type: "Bot" },
+            }),
+            repository: "Afternote/Afternote-FE",
+            loadIssue,
+        }),
+        /제목은 대표 Issue 번호 하나로 끝나야 합니다/,
+    );
+});
+
+test("the issue-assignee-exempt label skips the assignee check but keeps the Issue link requirement", async () => {
+    const labels = [{ name: "issue-assignee-exempt" }];
+    const loadIssue = issueLoader(new Map([
+        [1228, assignedIssue(1228, { assignees: [{ login: "someone-else" }] })],
+    ]));
+    const result = await validatePullRequestIssueLink({
+        pullRequest: pullRequest({ title: "change (#1228)", body: "Refs #1228", labels }),
+        repository: "Afternote/Afternote-FE",
+        loadIssue,
+    });
+    assert.deepEqual(result, { issues: [1228], rejected: [] });
+
+    const unassigned = await validatePullRequestIssueLink({
+        pullRequest: pullRequest({ title: "change (#12)", body: "Refs #12", labels }),
+        repository: "Afternote/Afternote-FE",
+        loadIssue: issueLoader(new Map([[12, assignedIssue(12, { assignees: [] })]])),
+    });
+    assert.deepEqual(unassigned, { issues: [12], rejected: [] });
+
+    await assert.rejects(
+        validatePullRequestIssueLink({
+            pullRequest: pullRequest({ title: "change", body: "", labels }),
+            repository: "Afternote/Afternote-FE",
+            loadIssue,
+        }),
+        /제목은 대표 Issue 번호 하나로 끝나야 합니다/,
+    );
+});
+
+test("unrelated labels keep the assignee rejection and point at the exempt label", async () => {
+    await assert.rejects(
+        validatePullRequestIssueLink({
+            pullRequest: pullRequest({
+                title: "change (#1228)",
+                body: "Refs #1228",
+                labels: [{ name: "review-debt-exempt" }, "bug"],
+            }),
+            repository: "Afternote/Afternote-FE",
+            loadIssue: issueLoader(new Map([
+                [1228, assignedIssue(1228, { assignees: [{ login: "someone-else" }] })],
+            ])),
+        }),
+        /담당자\(@someone-else\)가 아닙니다.*`issue-assignee-exempt` 라벨/,
+    );
+});
+
+test("requires the pull request author login", async () => {
+    await assert.rejects(
+        validatePullRequestIssueLink({
+            pullRequest: pullRequest({ title: "change (#1228)", body: "Refs #1228", user: null }),
+            repository: "Afternote/Afternote-FE",
+            loadIssue: issueLoader(new Map([[1228, assignedIssue(1228)]])),
+        }),
+        /pull_request\.user\.login 값이 없습니다/,
+    );
+});
+
 test("rejects a missing Issue", async () => {
     await assert.rejects(
         validatePullRequestIssueLink({
@@ -216,6 +363,7 @@ test("the PR template tells authors to reuse an Issue across pull requests", asy
     assert.match(template, /관련된 기존 Issue를 재사용/);
     assert.match(template, /PR 제목 끝에 대표 Issue 하나를 `\(#N\)` 형식/);
     assert.match(template, /여러 PR이 같은 Issue를 공유/);
+    assert.match(template, /대표 Issue에는 PR 작성자가 담당자로 지정/);
     assert.match(template, /최종 완료하는 PR에서만 Closes\/Fixes\/Resolves/);
     assert.match(template, /^- Refs #$/m);
     assert.doesNotMatch(template, /^- Closes #$/m);
diff --git a/.github/scripts/validate-pr-issue-link.mjs b/.github/scripts/validate-pr-issue-link.mjs
index b853d2bd7b..1659212f74 100644
--- a/.github/scripts/validate-pr-issue-link.mjs
+++ b/.github/scripts/validate-pr-issue-link.mjs
@@ -55,6 +55,29 @@ export function extractTitleIssueNumber(title) {
     return Number(matches[0][1]);
 }
 
+function issueAssigneeLogins(issue) {
+    return (issue?.assignees ?? [])
+        .map((assignee) => typeof assignee === "string" ? assignee : assignee?.login)
+        .filter(Boolean);
+}
+
+// 봇은 Issue 담당자로 지정할 수 없으므로 담당자 대조에서 면제한다.
+// review-debt-guard·review-request-all 의 봇 면제 규약과 같은 경계다.
+function isBotAuthor(user, login) {
+    return user?.type === "Bot" || login.endsWith("[bot]");
+}
+
+const ISSUE_ASSIGNEE_EXEMPT_LABEL = "issue-assignee-exempt";
+
+// 다른 담당자의 모듈이 develop 을 깨뜨렸을 때처럼 어사인 이관을 기다릴 수 없는
+// 긴급 PR 은 라벨 하나로 담당자 대조만 면제한다 — review-debt-exempt 와 같은 규약.
+// Issue 연결 요건 자체는 면제하지 않는다.
+export function hasIssueAssigneeExemptLabel(pullRequest) {
+    return (pullRequest?.labels ?? [])
+        .map((label) => typeof label === "string" ? label : label?.name)
+        .includes(ISSUE_ASSIGNEE_EXEMPT_LABEL);
+}
+
 export async function validatePullRequestIssueLink({ pullRequest, repository, loadIssue }) {
     if (typeof loadIssue !== "function") {
         throw new Error("loadIssue 함수가 필요합니다.");
@@ -63,6 +86,7 @@ export async function validatePullRequestIssueLink({ pullRequest, repository, lo
     if (!Number.isInteger(pullRequestNumber)) {
         throw new Error("pull_request.number 값이 없습니다.");
     }
+    const author = requiredString(pullRequest?.user?.login, "pull_request.user.login");
 
     const titleIssueNumber = extractTitleIssueNumber(pullRequest.title);
     if (titleIssueNumber === null) {
@@ -85,6 +109,7 @@ export async function validatePullRequestIssueLink({ pullRequest, repository, lo
 
     const issues = [];
     const rejected = [];
+    const issuesByNumber = new Map();
     for (const issueNumber of references) {
         let issue;
         try {
@@ -97,6 +122,7 @@ export async function validatePullRequestIssueLink({ pullRequest, repository, lo
             rejected.push(`#${issueNumber}: Issue가 아니라 PR`);
             continue;
         }
+        issuesByNumber.set(issueNumber, issue);
         issues.push(issueNumber);
     }
 
@@ -111,6 +137,20 @@ export async function validatePullRequestIssueLink({ pullRequest, repository, lo
             `PR #${pullRequestNumber} 제목의 대표 Issue #${titleIssueNumber}가 실제 Issue로 확인되지 않았습니다. ${titleRejection ?? "Issue 조회 결과를 확인하세요."}`,
         );
     }
+
+    if (!isBotAuthor(pullRequest.user, author) && !hasIssueAssigneeExemptLabel(pullRequest)) {
+        const assignees = issueAssigneeLogins(issuesByNumber.get(titleIssueNumber));
+        if (assignees.length === 0) {
+            throw new Error(
+                `PR #${pullRequestNumber}의 대표 Issue #${titleIssueNumber}에 담당자가 없습니다. Issue에 @${author}를 어사인한 뒤 다시 실행하세요.`,
+            );
+        }
+        if (!assignees.some((login) => login.toLowerCase() === author.toLowerCase())) {
+            throw new Error(
+                `PR #${pullRequestNumber} 작성자 @${author}는 대표 Issue #${titleIssueNumber}의 담당자(${assignees.map((login) => `@${login}`).join(", ")})가 아닙니다. 본인이 담당하는 Issue로만 PR을 열 수 있습니다. 담당자 이관을 기다릴 수 없는 긴급 수선이면 \`${ISSUE_ASSIGNEE_EXEMPT_LABEL}\` 라벨을 붙인 뒤 재검증(본문 수정 또는 push)을 트리거하세요.`,
+            );
+        }
+    }
     return { issues, rejected };
 }
 
@@ -143,6 +183,9 @@ async function main() {
         repository,
         loadIssue: (issueNumber) => requestIssue(apiUrl, repository, token, issueNumber),
     });
+    if (hasIssueAssigneeExemptLabel(pullRequest)) {
+        console.log(`${ISSUE_ASSIGNEE_EXEMPT_LABEL} 라벨 — 담당자 대조 건너뜀`);
+    }
     for (const warning of result.rejected) {
         console.log(`::warning::무효 Issue 참조: ${warning}`);
     }