diff --git a/go/osv/ecosystem/ecosystem.go b/go/osv/ecosystem/ecosystem.go
index 19c680340b9..a1b9ab488f9 100644
--- a/go/osv/ecosystem/ecosystem.go
+++ b/go/osv/ecosystem/ecosystem.go
@@ -56,6 +56,7 @@ func statelessFactory[E Ecosystem](_ string) Ecosystem {
 
 var ecosystems = map[osvconstants.Ecosystem]ecosystemFactory{
 	osvconstants.EcosystemAlmaLinux:                  statelessFactory[rpmEcosystem],
+	osvconstants.EcosystemAzureLinux:                 statelessFactory[rpmEcosystem],
 	osvconstants.EcosystemAlpaquita:                  statelessFactory[apkEcosystem],
 	osvconstants.EcosystemAlpine:                     statelessFactory[apkEcosystem],
 	osvconstants.EcosystemBellSoftHardenedContainers: statelessFactory[apkEcosystem],
diff --git a/go/osv/ecosystem/wrapper_test.go b/go/osv/ecosystem/wrapper_test.go
index 11b34a8a278..cdfddb8108d 100644
--- a/go/osv/ecosystem/wrapper_test.go
+++ b/go/osv/ecosystem/wrapper_test.go
@@ -17,6 +17,7 @@ func TestZeroVersion(t *testing.T) {
 		{"Maven", "alpha-alpha-alpha"},
 		{"npm", "0-pre"},
 		{"AlmaLinux:8", "B.02.19.2-6.el8"},                                                 // ALBA-2021:4442
+		{"Azure Linux:2", "5.15.55.1-1"},                                                   // AZL-10003
 		{"Debian:11", "0~20200923.3-2+deb11u1"},                                            // DLA-4116-1
 		{"Go", "0.0.0-20250619215741-6356e984b82a"},                                        // GHSA-24ch-w38v-xmh8
 		{"Mageia:9", "gtk+2.0-2.24.33-5.1.mga9"},                                           // MGASA-2024-0312
diff --git a/osv/ecosystems/_ecosystems.py b/osv/ecosystems/_ecosystems.py
index 2861a5bca12..e754180ba04 100644
--- a/osv/ecosystems/_ecosystems.py
+++ b/osv/ecosystems/_ecosystems.py
@@ -37,6 +37,7 @@
 _ecosystems = {
     'AlmaLinux': RPM,
     'Alpaquita': APK,
+    'Azure Linux': RPM,
     'Alpine': Alpine,
     'BellSoft Hardened Containers': APK,
     'Bioconductor': Bioconductor,
diff --git a/osv/ecosystems/redhat_test.py b/osv/ecosystems/redhat_test.py
index 0f785d27b11..022d788816e 100644
--- a/osv/ecosystems/redhat_test.py
+++ b/osv/ecosystems/redhat_test.py
@@ -126,6 +126,7 @@ def test_rpm_ecosystems(self):
     ecos = [
         'Red Hat',
         'AlmaLinux',
+        'Azure Linux',
         'Mageia',
         'openEuler',
         'openSUSE',
diff --git a/osv/purl_helpers.py b/osv/purl_helpers.py
index d9fc5690df2..3c7beb64ca4 100644
--- a/osv/purl_helpers.py
+++ b/osv/purl_helpers.py
@@ -26,6 +26,8 @@
 ECOSYSTEM_PURL_DATA = {
     'AlmaLinux':
         EcosystemPURL('rpm', 'almalinux'),
+    'Azure Linux':
+        EcosystemPURL('rpm', 'azure-linux'),
     'Alpaquita':
         EcosystemPURL('apk', 'alpaquita'),
     'Alpine':
diff --git a/osv/purl_helpers_test.py b/osv/purl_helpers_test.py
index f0abe5c681e..139ed41704d 100644
--- a/osv/purl_helpers_test.py
+++ b/osv/purl_helpers_test.py
@@ -26,6 +26,10 @@ def tests_package_to_purl(self):
     self.assertEqual('pkg:rpm/almalinux/libvpx',
                      purl_helpers.package_to_purl('AlmaLinux', 'libvpx'))
 
+    self.assertEqual(
+        'pkg:rpm/azure-linux/test-package',
+        purl_helpers.package_to_purl('Azure Linux', 'test-package'))
+
     self.assertEqual('pkg:apk/alpaquita/xz?arch=source',
                      purl_helpers.package_to_purl('Alpaquita', 'xz'))
 
@@ -184,6 +188,10 @@ def test_parse_purl(self):
     self.assertEqual(('AlmaLinux', 'libvpx', None),
                      purl_helpers.parse_purl('pkg:rpm/almalinux/libvpx'))
 
+    self.assertEqual(
+        ('Azure Linux', 'test-package', '1.2.3'),
+        purl_helpers.parse_purl('pkg:rpm/azure-linux/test-package@1.2.3'))
+
     self.assertEqual(('Alpaquita', 'xz', None),
                      purl_helpers.parse_purl(
                          'pkg:apk/alpaquita/xz?arch=source&distro=stream'))