diff --git a/repo_autoindex/_impl/base.py b/repo_autoindex/_impl/base.py
index 55a8121..26b67c6 100644
--- a/repo_autoindex/_impl/base.py
+++ b/repo_autoindex/_impl/base.py
@@ -56,6 +56,23 @@ class IndexEntry:
     padding: str = ""
     icon: str = ICON_OTHER
 
+    @property
+    def sort_key(self):
+        # Returns a suggested sort key for displaying entries in
+        # a UI.
+
+        priority = 0
+
+        # Folders should come first
+        if self.href.endswith("/"):
+            priority -= 1
+            # And special folders like ".." even earlier
+            if self.href.startswith("."):
+                priority -= 1
+
+        # Entries sort by the priority we calculated, and then by name
+        return (priority, self.href)
+
 
 class Repo(ABC):
     def __init__(
diff --git a/repo_autoindex/_impl/tree.py b/repo_autoindex/_impl/tree.py
index 168bda4..3fa466b 100644
--- a/repo_autoindex/_impl/tree.py
+++ b/repo_autoindex/_impl/tree.py
@@ -70,4 +70,6 @@ def treeify(
                 ]
             )
 
+    out.entries.sort(key=lambda entry: entry.sort_key)
+
     return out
diff --git a/tests/test_kickstart_render_typical.py b/tests/test_kickstart_render_typical.py
index 6dcac1c..851fdf3 100644
--- a/tests/test_kickstart_render_typical.py
+++ b/tests/test_kickstart_render_typical.py
@@ -1,4 +1,5 @@
 import io
+import re
 from typing import BinaryIO, Optional
 import textwrap
 
@@ -619,6 +620,30 @@ async def test_typical_index():
 
     assert '<a href="vmlinuz">' in by_relative_dir["images/pxeboot"].content
 
+    # Sample the order of entries in some of the listings.
+    # Directories are expected to come first.
+    links = re.findall(r'<a href="([^"]+)"', by_relative_dir[""].content)
+    assert links == [
+        "images/",
+        "packages/",
+        "repodata/",
+        "EULA",
+        "GPL",
+        "RPM-GPG-KEY-redhat-beta",
+        "RPM-GPG-KEY-redhat-release",
+        "extra_files.json",
+        "treeinfo",
+    ]
+
+    links = re.findall(r'<a href="([^"]+)"', by_relative_dir["images"].content)
+    assert links == [
+        "../",
+        "pxeboot/",
+        "boot.iso",
+        "efiboot.img",
+        "install.img",
+    ]
+
 
 async def test_typical_appstream_index():
     fetcher = StaticFetcher()