diff --git a/resources/knowledge/original/_pipeline/pum_md_tool.py b/resources/knowledge/original/_pipeline/pum_md_tool.py
index 42f72b74..9e86a673 100644
--- a/resources/knowledge/original/_pipeline/pum_md_tool.py
+++ b/resources/knowledge/original/_pipeline/pum_md_tool.py
@@ -193,10 +193,21 @@ _SLOT = re.compile(r"(?:([^/]+)/)?제(\d+)장_[^/]*/(\d+-\d+(?:-\d+)?)_")
 _MAX_PAGES = 40
 
 
+def _side_number(page, row: str) -> bool:
+    """가로로 눕힌 쪽(건설 813~817)의 옆 띠 쪽 번호 — 맨 끝(홀수 쪽) 또는 맨 앞(짝수 쪽) 줄에 수만 남음."""
+    return page.rect.width > page.rect.height and row.isdigit()
+
+
+def _is_footer(page, row: str, footer: re.Pattern) -> bool:
+    return bool(footer.match(row)) or _side_number(page, row)
+
+
 def _body_rows(page, footer: re.Pattern) -> list[str]:
     """쪽의 줄 — 맨 아래 쪽 꼬리(쪽 번호 · 장 이름)와 이어짐 표지 「→」 는 뺌."""
     rows = [row.strip() for row in _page_rows(page)]
-    if rows and footer.match(rows[-1]):
+    if rows and _side_number(page, rows[0]):
+        rows = rows[1:]
+    if rows and _is_footer(page, rows[-1], footer):
         rows = rows[:-1]
     return [row for row in rows if row != "→"]
 
@@ -385,8 +396,10 @@ def pdf_lines(doc, head: dict[str, str], footer: re.Pattern) -> list[tuple[int,
     out = []
     for number in range(start_page, min(end_page, last) + 1):
         rows = [row.strip() for row in read_rows(doc[number - 1])]
-        if rows and footer.match(rows[-1]):
+        if rows and _is_footer(doc[number - 1], rows[-1], footer):
             rows[-1] = ""  # 쪽 꼬리
+        if rows and _side_number(doc[number - 1], rows[0]):
+            rows[0] = ""  # 눕힌 쪽 옆 띠 쪽 번호
         for index, row in enumerate(rows):
             if (number, index) < (start_page, start_row) or (number, index) >= (end_page, end_row):
                 continue
diff --git a/resources/tester/test_pum_md_tool.py b/resources/tester/test_pum_md_tool.py
index 9266dadc..d896abb5 100644
--- a/resources/tester/test_pum_md_tool.py
+++ b/resources/tester/test_pum_md_tool.py
@@ -172,6 +172,24 @@ def test_repeated_head_comment_counts_and_footer_dropped():
     assert tool.verdict(tool.compare(pdf, tool.md_lines(md))).startswith("통과")
 
 
+def test_landscape_page_side_number_is_footer():
+    """가로로 눕힌 쪽은 옆 띠 쪽 번호(맨 끝·맨 앞 줄 · 수만)를 꼬리로 뺌 · 세로 쪽의 맨 앞·끝 수 줄은 본문으로 둠."""
+    pymupdf = pytest.importorskip("pymupdf")
+    doc = pymupdf.open()
+    pages = (
+        ((842, 595), ["9-5. A", "X 1.0", "757"]),
+        ((842, 595), ["758", "Z 3.0"]),
+        ((595, 842), ["7", "Y 2.0", "10"]),
+    )
+    for size, lines in pages:
+        page = doc.new_page(width=size[0], height=size[1])
+        for n, text in enumerate(lines):
+            page.insert_text((72, 72 + 30 * n), text)
+    head = {"PDF쪽": "1~3", "시작표지": "9-5. A", "끝표지": "끝"}
+    pdf = tool.pdf_lines(doc, head, tool.BOOKS["산림"]["footer"])
+    assert [row for _, row in pdf] == ["9-5. A", "X 1.0", "Z 3.0", "7", "Y 2.0", "10"]
+
+
 def test_off_layer_glyphs_and_compat_han():
     """사용자 영역 글리프는 ①② 에서 빼고 드러냄 · md 는 감싼 받아쓰기를 뺌 · 호환 한자는 통합 한자로(NFKC 통째 아님)."""
     pdf = [(21, "체적 V \ue001\ue002 = 1.5"), (21, "공극\uf9db ㎥ ①")]