diff --git a/src/textual/document/_edit.py b/src/textual/document/_edit.py
index d0bd5ad83d..dc9c04aeba 100644
--- a/src/textual/document/_edit.py
+++ b/src/textual/document/_edit.py
@@ -81,8 +81,16 @@ def do(self, text_area: TextArea, record_selection: bool = True) -> EditResult:
         )
 
         row_offset = new_edit_to_row - edit_bottom_row
-        target_selection_start_row = selection_start_row + row_offset
-        target_selection_end_row = selection_end_row + row_offset
+        target_selection_start_row = (
+            selection_start_row + row_offset
+            if edit_bottom_row <= selection_start_row
+            else selection_start_row
+        )
+        target_selection_end_row = (
+            selection_end_row + row_offset
+            if edit_bottom_row <= selection_end_row
+            else selection_end_row
+        )
 
         if self.maintain_selection_offset:
             self._updated_selection = Selection(
diff --git a/tests/text_area/test_edit_via_api.py b/tests/text_area/test_edit_via_api.py
index e217bfa210..e732680f0f 100644
--- a/tests/text_area/test_edit_via_api.py
+++ b/tests/text_area/test_edit_via_api.py
@@ -106,6 +106,27 @@ async def test_insert_character_near_cursor_maintain_selection_offset(
         assert text_area.selection == Selection.cursor(cursor_destination)
 
 
+@pytest.mark.parametrize(
+    "cursor_location,insert_location,cursor_destination",
+    [
+        ((1, 0), (0, 0), (2, 0)),  # API insert before cursor row
+        ((0, 0), (0, 0), (1, 0)),  # API insert right at cursor row
+        ((0, 0), (1, 0), (0, 0)),  # API insert after cursor row
+    ],
+)
+async def test_insert_newline_around_cursor_maintain_selection_offset(
+    cursor_location,
+    insert_location,
+    cursor_destination
+):
+    app = TextAreaApp()
+    async with app.run_test():
+        text_area = app.query_one(TextArea)
+        text_area.move_cursor(cursor_location)
+        text_area.insert("X\n", location=insert_location)
+        assert text_area.selection == Selection.cursor(cursor_destination)
+
+
 async def test_insert_newlines_start():
     app = TextAreaApp()
     async with app.run_test():