diff --git a/spacy/lang/sv/__init__.py b/spacy/lang/sv/__init__.py
index 6963e8b79..28e5085a8 100644
--- a/spacy/lang/sv/__init__.py
+++ b/spacy/lang/sv/__init__.py
@@ -6,10 +6,7 @@ from .lex_attrs import LEX_ATTRS
 from .syntax_iterators import SYNTAX_ITERATORS
 from ...language import Language, BaseDefaults
 from ...pipeline import Lemmatizer
-
-
-# Punctuation stolen from Danish
-from ..da.punctuation import TOKENIZER_INFIXES, TOKENIZER_SUFFIXES
+from .punctuation import TOKENIZER_INFIXES, TOKENIZER_SUFFIXES
 
 
 class SwedishDefaults(BaseDefaults):
diff --git a/spacy/lang/sv/punctuation.py b/spacy/lang/sv/punctuation.py
new file mode 100644
index 000000000..67f1bcdc4
--- /dev/null
+++ b/spacy/lang/sv/punctuation.py
@@ -0,0 +1,33 @@
+from ..char_classes import LIST_ELLIPSES, LIST_ICONS
+from ..char_classes import CONCAT_QUOTES, ALPHA, ALPHA_LOWER, ALPHA_UPPER
+from ..punctuation import TOKENIZER_SUFFIXES
+
+
+_quotes = CONCAT_QUOTES.replace("'", "")
+
+_infixes = (
+    LIST_ELLIPSES
+    + LIST_ICONS
+    + [
+        r"(?<=[{al}])\.(?=[{au}])".format(al=ALPHA_LOWER, au=ALPHA_UPPER),
+        r"(?<=[{a}])[,!?](?=[{a}])".format(a=ALPHA),
+        r"(?<=[{a}])[<>=](?=[{a}])".format(a=ALPHA),
+        r"(?<=[{a}]):(?=[{a}])".format(a=ALPHA_UPPER),
+        r"(?<=[{a}]),(?=[{a}])".format(a=ALPHA),
+        r"(?<=[{a}])([{q}\)\]\(\[])(?=[{a}])".format(a=ALPHA, q=_quotes),
+        r"(?<=[{a}])--(?=[{a}])".format(a=ALPHA),
+        r"(?<=[{a}0-9])[<>=/](?=[{a}])".format(a=ALPHA),
+        r"(?<=[{a}0-9]):(?=[{a}])".format(a=ALPHA_UPPER),
+    ]
+)
+
+_suffixes = [
+    suffix
+    for suffix in TOKENIZER_SUFFIXES
+    if suffix not in ["'s", "'S", "’s", "’S", r"\'"]
+]
+_suffixes += [r"(?<=[^sSxXzZ])\'"]
+
+
+TOKENIZER_INFIXES = _infixes
+TOKENIZER_SUFFIXES = _suffixes
diff --git a/spacy/tests/lang/sv/test_prefix_suffix_infix.py b/spacy/tests/lang/sv/test_prefix_suffix_infix.py
index bbb0ff415..0aa495992 100644
--- a/spacy/tests/lang/sv/test_prefix_suffix_infix.py
+++ b/spacy/tests/lang/sv/test_prefix_suffix_infix.py
@@ -32,3 +32,10 @@ def test_tokenizer_splits_comma_infix(sv_tokenizer, text):
 def test_tokenizer_splits_ellipsis_infix(sv_tokenizer, text):
     tokens = sv_tokenizer(text)
     assert len(tokens) == 3
+
+
+@pytest.mark.issue(12311)
+@pytest.mark.parametrize("text", ["99:e", "c:a", "EU:s", "Maj:t"])
+def test_sv_tokenizer_handles_colon(sv_tokenizer, text):
+    tokens = sv_tokenizer(text)
+    assert len(tokens) == 1