diff --git a/app/modules/project/templates/project/inbox.html b/app/modules/project/templates/project/inbox.html
index 1df813a..a123116 100644
--- a/app/modules/project/templates/project/inbox.html
+++ b/app/modules/project/templates/project/inbox.html
@@ -1,7 +1,7 @@
 {% extends "erp_base.html" %}
 
 {% block head_extra %}
-<link rel="stylesheet" href="/static/project.css?v=20260915g" />
+<link rel="stylesheet" href="/static/project.css?v=20260915h" />
 <link rel="stylesheet" href="/static/vendor/material-symbols/material-symbols.css" />
 {% endblock %}
 
@@ -45,5 +45,5 @@
   {% endif %}
 </div>
 
-<script src="/static/project.js?v=20260915f" defer></script>
+<script src="/static/project.js?v=20260915g" defer></script>
 {% endblock %}
diff --git a/app/modules/project/templates/project/index.html b/app/modules/project/templates/project/index.html
index ee65ef3..dc37065 100644
--- a/app/modules/project/templates/project/index.html
+++ b/app/modules/project/templates/project/index.html
@@ -1,7 +1,7 @@
 {% extends "erp_base.html" %}
 
 {% block head_extra %}
-<link rel="stylesheet" href="/static/project.css?v=20260915g" />
+<link rel="stylesheet" href="/static/project.css?v=20260915h" />
 <link rel="stylesheet" href="/static/vendor/material-symbols/material-symbols.css" />
 {% endblock %}
 
@@ -330,5 +330,5 @@
 <script>
   window.PJ_COLORS = {{ ["#4573d2","#37a3a3","#62a420","#e8a33d","#e8384f","#aa62e3","#f06a6a","#5a6772"] | tojson }};
 </script>
-<script src="/static/project.js?v=20260915f" defer></script>
+<script src="/static/project.js?v=20260915g" defer></script>
 {% endblock %}
diff --git a/app/modules/project/templates/project/project.html b/app/modules/project/templates/project/project.html
index 040ab54..b195963 100644
--- a/app/modules/project/templates/project/project.html
+++ b/app/modules/project/templates/project/project.html
@@ -1,7 +1,7 @@
 {% extends "erp_base.html" %}
 
 {% block head_extra %}
-<link rel="stylesheet" href="/static/project.css?v=20260915g" />
+<link rel="stylesheet" href="/static/project.css?v=20260915h" />
 <!-- 구글 머티리얼 심볼(담당자 아이콘 등) — self-host -->
 <link rel="stylesheet" href="/static/vendor/material-symbols/material-symbols.css" />
 <!-- 타임라인 vis-timeline — self-host -->
@@ -291,5 +291,5 @@
 </script>
 
 <script src="/static/vendor/vis-timeline/vis-timeline-graph2d.min.js"></script>
-<script src="/static/project.js?v=20260915f" defer></script>
+<script src="/static/project.js?v=20260915g" defer></script>
 {% endblock %}
diff --git a/app/static/project.css b/app/static/project.css
index abd7650..46c4937 100644
--- a/app/static/project.css
+++ b/app/static/project.css
@@ -17,6 +17,7 @@
 .pj-icon-btn {
   border: none; background: transparent; color: #6b7280; cursor: pointer;
   font-size: 16px; line-height: 1; width: 24px; height: 24px; border-radius: 6px;
+  padding: 0; display: inline-flex; align-items: center; justify-content: center;
 }
 .pj-icon-btn:hover { background: #eceef0; color: #1e1f21; }
 
@@ -370,7 +371,12 @@
   box-shadow: 0 1px 2px rgba(0,0,0,.06);
 }
 .pj-chat-msg.mine .pj-chat-bubble { background: #fee500; border-radius: 14px 14px 4px 14px; }
-.pj-chat-time { font-size: 10px; color: #9aa1a9; margin-top: 3px; padding: 0 2px; }
+.pj-chat-meta { display: flex; align-items: center; gap: 3px; margin-top: 3px; padding: 0 2px; }
+.pj-chat-time { font-size: 10px; color: #9aa1a9; }
+/* 본인 댓글만 보이는 삭제 버튼 */
+.pj-chat-del { width: 16px; height: 16px; color: #b7bdc5; }
+.pj-chat-del .material-symbols-outlined { font-size: 13px; }
+.pj-chat-del:hover { color: #c22b10; background: #fbecea; }
 
 /* ── 보드 단계 컨트롤 ── */
 .pj-col-head { position: relative; }
diff --git a/app/static/project.js b/app/static/project.js
index c1adab8..b7fb7b5 100644
--- a/app/static/project.js
+++ b/app/static/project.js
@@ -453,8 +453,21 @@
               li.innerHTML =
                 (mine ? "" : '<span class="pj-chat-name">' + escapeHtml(idOf(c.author_email)) + "</span>") +
                 '<div class="pj-chat-bubble"></div>' +
-                '<span class="pj-chat-time">' + (c.created_at || "").slice(0, 16).replace("T", " ") + "</span>";
+                '<span class="pj-chat-meta">' +
+                (mine ? '<button type="button" class="pj-icon-btn pj-chat-del" title="삭제"><span class="material-symbols-outlined">close</span></button>' : "") +
+                '<span class="pj-chat-time">' + (c.created_at || "").slice(0, 16).replace("T", " ") + "</span>" +
+                "</span>";
               li.querySelector(".pj-chat-bubble").textContent = c.body;
+              if (mine) {
+                li.querySelector(".pj-chat-del").addEventListener("click", async function () {
+                  if (!confirm("이 댓글을 삭제할까요?")) return;
+                  try {
+                    await api("DELETE", "/project/api/comments/" + c.id);
+                    const n = await renderChat(taskId);
+                    if (n !== null) { markSeen(taskId, n); syncBadge(taskId, n); }
+                  } catch (e) { alert("삭제 실패: " + e.message); }
+                });
+              }
               list.appendChild(li);
             });
             list.scrollTop = list.scrollHeight;