diff --git a/djhtml/__main__.py b/djhtml/__main__.py
index 2842ac0..51ea58d 100644
--- a/djhtml/__main__.py
+++ b/djhtml/__main__.py
@@ -48,6 +48,13 @@ def main() -> None:
     if len(options.input_filenames) > 1 and "-" in options.input_filenames:
         sys.exit("I’m sorry Dave, I’m afraid I can’t do that.")
 
+    extra_blocks = {}
+    extra_middle_tags = []
+    for block_tuple in options.extra_block or ():
+        if len(block_tuple) >= 2:
+            extra_blocks[block_tuple[0]] = block_tuple[-1]
+            extra_middle_tags.extend(block_tuple[1:-1])
+
     for filename in _generate_filenames(options.input_filenames, suffixes):
         # Read input file
         try:
@@ -74,11 +81,12 @@ def main() -> None:
             guess = probabilities.index(max(probabilities))
 
         # Indent input file
-        extra_blocks = dict(options.extra_block or ())
         try:
-            result = Mode(source, extra_blocks=extra_blocks).indent(
-                options.tabwidth or guess or 4
-            )
+            result = Mode(
+                source,
+                extra_blocks=extra_blocks,
+                extra_middle_tags=extra_middle_tags,
+            ).indent(options.tabwidth or guess or 4)
         except modes.MaxLineLengthExceeded:
             problematic_files += 1
             _error(f"Maximum line length exceeded in {filename}")
diff --git a/djhtml/modes.py b/djhtml/modes.py
index c3ea11a..56b57e9 100644
--- a/djhtml/modes.py
+++ b/djhtml/modes.py
@@ -36,6 +36,7 @@ def __init__(
         source: str = "",
         return_mode: BaseMode | None = None,
         extra_blocks: dict[str, str] | None = None,
+        extra_middle_tags: list[str] | None = None,
     ) -> None:
         """
         Instantiate with source text before calling indent(), or
@@ -49,6 +50,7 @@ def __init__(
         self.return_mode = return_mode or self
         self.token_re = compile_re(self.RAW_TOKENS)
         self.extra_blocks = extra_blocks or {}
+        self.extra_middle_tags = extra_middle_tags or []
 
         # To keep track of the current and previous offsets.
         self.offsets = OffsetDict(relative=0, absolute=0)
@@ -252,7 +254,9 @@ def create_token(
                 token = Token.Close(raw_token, mode=DjTXT, **self.offsets)
             elif self._has_closing_token(name, raw_token, src):
                 token = Token.Open(raw_token, mode=DjTXT, **self.offsets)
-            elif name in self.CLOSING_AND_OPENING_TAGS:
+            elif (
+                name in self.CLOSING_AND_OPENING_TAGS or name in self.extra_middle_tags
+            ):
                 token = Token.CloseAndOpen(raw_token, mode=DjTXT, **self.offsets)
             else:
                 token = Token.Text(raw_token, mode=DjTXT, **self.offsets)
@@ -440,13 +444,15 @@ def __init__(
         source: str = "",
         return_mode: BaseMode | None = None,
         extra_blocks: dict[str, str] | None = None,
+        extra_middle_tags: list[str] | None = None,
     ) -> None:
-        super().__init__(source, return_mode, extra_blocks)
+        super().__init__(source, return_mode, extra_blocks, extra_middle_tags)
         self.haskell = False
         self.haskell_re = re.compile(r"^ *, ([$\w-]+ *=|[$\w-]+;?)")
         self.variable_re = re.compile(r"^ *([$\w-]+ *=|[$\w-]+;?)")
         self.previous_line_ended_with_comma = False
         self.extra_blocks = {}
+        self.extra_middle_tags = []
 
     def create_token(
         self, raw_token: str, src: str, line: Line
@@ -559,6 +565,7 @@ def __init__(
         self.return_mode = return_mode
         self.token_re = compile_re([r"\n", endtag])
         self.extra_blocks = {}
+        self.extra_middle_tags = []
 
     def create_token(
         self, raw_token: str, src: str, line: Line
@@ -594,6 +601,7 @@ def __init__(
         self.inside_attr = False
         self.additional_offset = -len(tagname) - 1 if absolute else 0
         self.extra_blocks = {}
+        self.extra_middle_tags = []
 
     def create_token(
         self, raw_token: str, src: str, line: Line
diff --git a/djhtml/options.py b/djhtml/options.py
index 2223e71..f217070 100644
--- a/djhtml/options.py
+++ b/djhtml/options.py
@@ -62,7 +62,7 @@
     "-b",
     "--extra-block",
     action="append",
-    help="startblock,endblock pair",
+    help="startblock[,middletag,...],endblock tuple",
     type=lambda x: tuple(x.split(",")),
 )
 
diff --git a/tests/suite/django.html b/tests/suite/django.html
index 73da8db..3d4e06c 100644
--- a/tests/suite/django.html
+++ b/tests/suite/django.html
@@ -200,3 +200,10 @@ <h1>Welcome, {{ request.user }}</h1>
 {% weird_tag %}
     <div></div>
 {% endweird %}
+
+<!-- Custom tag with custom middle tag -->
+{% weird_tag %}
+    <div>first</div>
+{% weird_middle %}
+    <div>second</div>
+{% endweird %}
diff --git a/tests/suite/django.tokens b/tests/suite/django.tokens
index 2c2d4e6..e53fcf9 100644
--- a/tests/suite/django.tokens
+++ b/tests/suite/django.tokens
@@ -200,4 +200,11 @@ Line([Open('<!--', mode=DjHTML, ignore=True), Text(' Custom tag with custom end
 Line([Open('{% weird_tag %}', mode=DjTXT)])
 Line([Text('    ', mode=DjHTML), Text('<', mode=DjHTML), Text('div', mode=InsideHTMLTag, absolute=5), Open('>', mode=DjHTML, level=1), Close('</div>', mode=DjHTML)], level=1)
 Line([Close('{% endweird %}', mode=DjTXT)])
+Line([])
+Line([Open('<!--', mode=DjHTML, ignore=True), Text(' Custom tag with custom middle tag ', mode=Comment, ignore=True), Close('-->', mode=DjHTML, ignore=True)], ignore=True)
+Line([Open('{% weird_tag %}', mode=DjTXT)])
+Line([Text('    ', mode=DjHTML), Text('<', mode=DjHTML), Text('div', mode=InsideHTMLTag, absolute=5), Open('>', mode=DjHTML, level=1), Text('first', mode=DjHTML), Close('</div>', mode=DjHTML)], level=1)
+Line([CloseAndOpen('{% weird_middle %}', mode=DjTXT)])
+Line([Text('    ', mode=DjHTML), Text('<', mode=DjHTML), Text('div', mode=InsideHTMLTag, absolute=5), Open('>', mode=DjHTML, level=1), Text('second', mode=DjHTML), Close('</div>', mode=DjHTML)], level=1)
+Line([Close('{% endweird %}', mode=DjTXT)])
 Line([])
\ No newline at end of file
diff --git a/tests/test_suite.py b/tests/test_suite.py
index cab0eba..411b479 100644
--- a/tests/test_suite.py
+++ b/tests/test_suite.py
@@ -28,18 +28,24 @@ def _test_file(self, basename: str) -> None:
 
         # Indent the expected output to 0 (no indentation)
         unindented = DjHTML(
-            expected_output, extra_blocks={"weird_tag": "endweird"}
+            expected_output,
+            extra_blocks={"weird_tag": "endweird"},
+            extra_middle_tags=["weird_middle"],
         ).indent(0)
         self.assertNotEqual(unindented, expected_output)
 
         # Re-indent the unindented output to 4
         actual_output = DjHTML(
-            unindented, extra_blocks={"weird_tag": "endweird"}
+            unindented,
+            extra_blocks={"weird_tag": "endweird"},
+            extra_middle_tags=["weird_middle"],
         ).indent(4)
         self.assertEqual(expected_output, actual_output)
 
         # Compare the tokenization
         actual_tokens = DjHTML(
-            actual_output, extra_blocks={"weird_tag": "endweird"}
+            actual_output,
+            extra_blocks={"weird_tag": "endweird"},
+            extra_middle_tags=["weird_middle"],
         ).debug()
         self.assertEqual(expected_tokens, actual_tokens)