diff --git a/CHANGES/2782.feature b/CHANGES/2782.feature
new file mode 100644
index 0000000000..0ca02e79c2
--- /dev/null
+++ b/CHANGES/2782.feature
@@ -0,0 +1 @@
+Added ``username_autocomplete`` filter to ``LegacyRole``.
\ No newline at end of file
diff --git a/galaxy_ng/app/api/v1/filtersets.py b/galaxy_ng/app/api/v1/filtersets.py
index 8c734e7eaa..8555a82a45 100644
--- a/galaxy_ng/app/api/v1/filtersets.py
+++ b/galaxy_ng/app/api/v1/filtersets.py
@@ -95,6 +95,7 @@ class LegacyRoleFilter(filterset.FilterSet):
     tags = filters.CharFilter(method='tags_filter')
     tag = filters.CharFilter(method='tags_filter')
     autocomplete = filters.CharFilter(method='autocomplete_filter')
+    username_autocomplete = filters.CharFilter(method='username_autocomplete_filter')
     owner__username = filters.CharFilter(method='owner__username_filter')
     namespace = filters.CharFilter(method='namespace_filter')
 
@@ -156,3 +157,12 @@ def autocomplete_filter(self, queryset, name, value):
             )
 
         return queryset
+
+    def username_autocomplete_filter(self, queryset, name, value):
+
+        keywords = self.request.query_params.getlist('username_autocomplete')
+
+        for keyword in keywords:
+            queryset = queryset.filter(namespace__name__icontains=keyword)
+
+        return queryset
diff --git a/galaxy_ng/tests/integration/api/test_community.py b/galaxy_ng/tests/integration/api/test_community.py
index c5f29d5c8c..9aceb58f3c 100644
--- a/galaxy_ng/tests/integration/api/test_community.py
+++ b/galaxy_ng/tests/integration/api/test_community.py
@@ -3,6 +3,7 @@
 
 import json
 import pytest
+import subprocess
 
 from urllib.parse import urlparse
 
@@ -525,6 +526,74 @@ def test_v1_autocomplete_search(ansible_config):
     cleanup_social_user(github_user2, ansible_config)
 
 
+@pytest.mark.deployment_community
+def test_v1_username_autocomplete_search(ansible_config):
+    """"
+        Tests v1 roles filtering by 'username_autocomplete' and
+        ansible-galaxy role search --author works as expected.
+    """
+
+    config = ansible_config("admin")
+    api_client = get_client(
+        config=config,
+        request_token=False,
+        require_auth=True
+    )
+
+    github_user = 'geerlingguy'
+    cleanup_social_user(github_user, ansible_config)
+
+    # sync geerlingguy roles
+    pargs = json.dumps({"github_user": github_user, "limit": 5}).encode('utf-8')
+    resp = api_client('/api/v1/sync/', method='POST', args=pargs)
+    assert isinstance(resp, dict)
+    assert resp.get('task') is not None
+    wait_for_v1_task(resp=resp, api_client=api_client)
+
+    # sync more roles
+    pargs = json.dumps({"limit": 5}).encode('utf-8')
+    resp = api_client('/api/v1/sync/', method='POST', args=pargs)
+    assert isinstance(resp, dict)
+    assert resp.get('task') is not None
+    wait_for_v1_task(resp=resp, api_client=api_client)
+
+    # verify filtering works
+    resp = api_client(f'/api/v1/roles/?username_autocomplete={github_user}')
+    assert resp['count'] == 5
+    for role in resp['results']:
+        assert role["username"] == github_user
+
+    server = config.get("url")
+
+    # test correct results with ansible-galaxy role search
+    cmd = [
+        "ansible-galaxy"
+        + " role search"
+        + " --author "
+        + github_user
+        + " --server "
+        + server
+    ]
+    proc = subprocess.run(cmd, shell=True, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
+    assert b"Found 5 roles matching your search" in proc.stdout
+
+    cmd = [
+        "ansible-galaxy"
+        + " role search"
+        + " --author "
+        + github_user
+        + " adminer "
+        + " --server "
+        + server
+    ]
+    proc = subprocess.run(cmd, shell=True, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
+    assert b"Found 1 roles matching your search" in proc.stdout
+    assert b"geerlingguy.adminer" in proc.stdout
+
+    # cleanup
+    cleanup_social_user(github_user, ansible_config)
+
+
 @pytest.mark.deployment_community
 def test_v1_role_pagination(ansible_config):
     """" Tests if v1 roles are auto-sorted by created """