diff --git a/extensions/kubernetes/spi/src/main/java/io/quarkus/kubernetes/spi/KubernetesRoleBindingBuildItem.java b/extensions/kubernetes/spi/src/main/java/io/quarkus/kubernetes/spi/KubernetesRoleBindingBuildItem.java
index 7187c92d1da7a..cfa503f680c68 100644
--- a/extensions/kubernetes/spi/src/main/java/io/quarkus/kubernetes/spi/KubernetesRoleBindingBuildItem.java
+++ b/extensions/kubernetes/spi/src/main/java/io/quarkus/kubernetes/spi/KubernetesRoleBindingBuildItem.java
@@ -5,9 +5,7 @@
 
 /**
  * Produce this build item to request the Kubernetes extension to generate
- * a Kubernetes {@code RoleBinding} resource. The configuration here is limited;
- * in particular, you can't specify subjects of the role binding. The role will always
- * be bound to the application's service account.
+ * a Kubernetes {@code RoleBinding} resource.
  * <p>
  * Note that this can't be used to generate a {@code ClusterRoleBinding}.
  */
@@ -17,6 +15,7 @@ public final class KubernetesRoleBindingBuildItem extends BaseTargetable {
      * Can be {@code null}, in which case the resource name is autogenerated.
      */
     private final String name;
+    private final String namespace;
     /**
      * RoleRef configuration.
      */
@@ -47,8 +46,15 @@ public KubernetesRoleBindingBuildItem(String name, String role, boolean clusterW
 
     public KubernetesRoleBindingBuildItem(String name, String target, Map<String, String> labels, RoleRef roleRef,
             Subject... subjects) {
+        this(name, null, target, labels, roleRef, subjects);
+    }
+
+    public KubernetesRoleBindingBuildItem(String name, String namespace, String target, Map<String, String> labels,
+            RoleRef roleRef,
+            Subject... subjects) {
         super(target);
         this.name = name;
+        this.namespace = namespace;
         this.labels = labels;
         this.roleRef = roleRef;
         this.subjects = subjects;
@@ -58,6 +64,10 @@ public String getName() {
         return this.name;
     }
 
+    public String getNamespace() {
+        return namespace;
+    }
+
     public Map<String, String> getLabels() {
         return labels;
     }
diff --git a/extensions/kubernetes/vanilla/deployment/src/main/java/io/quarkus/kubernetes/deployment/AddRoleBindingResourceDecorator.java b/extensions/kubernetes/vanilla/deployment/src/main/java/io/quarkus/kubernetes/deployment/AddRoleBindingResourceDecorator.java
index 4db922a841a59..414a906c32b32 100644
--- a/extensions/kubernetes/vanilla/deployment/src/main/java/io/quarkus/kubernetes/deployment/AddRoleBindingResourceDecorator.java
+++ b/extensions/kubernetes/vanilla/deployment/src/main/java/io/quarkus/kubernetes/deployment/AddRoleBindingResourceDecorator.java
@@ -21,11 +21,12 @@ public class AddRoleBindingResourceDecorator extends ResourceProvidingDecorator<
 
     private final String deploymentName;
     private final String name;
+    private final String namespace;
     private final Map<String, String> labels;
     private final RoleRef roleRef;
     private final Subject[] subjects;
 
-    public AddRoleBindingResourceDecorator(String deploymentName, String name, Map<String, String> labels,
+    public AddRoleBindingResourceDecorator(String deploymentName, String name, String namespace, Map<String, String> labels,
             RoleRef roleRef,
             Subject... subjects) {
         this.deploymentName = deploymentName;
@@ -33,6 +34,7 @@ public AddRoleBindingResourceDecorator(String deploymentName, String name, Map<S
         this.labels = labels;
         this.roleRef = roleRef;
         this.subjects = subjects;
+        this.namespace = namespace;
     }
 
     public void visit(KubernetesListBuilder list) {
@@ -40,16 +42,19 @@ public void visit(KubernetesListBuilder list) {
             return;
         }
 
-        Map<String, String> roleBindingLabels = new HashMap<>();
-        roleBindingLabels.putAll(labels);
+        Map<String, String> roleBindingLabels = new HashMap<>(labels);
         getDeploymentMetadata(list, deploymentName)
                 .map(ObjectMeta::getLabels)
                 .ifPresent(roleBindingLabels::putAll);
 
-        RoleBindingBuilder builder = new RoleBindingBuilder()
-                .withNewMetadata()
+        final var metadataBuilder = new RoleBindingBuilder().withNewMetadata()
                 .withName(name)
-                .withLabels(roleBindingLabels)
+                .withLabels(roleBindingLabels);
+        // add namespace if it was specified
+        if (namespace != null) {
+            metadataBuilder.withNamespace(namespace);
+        }
+        RoleBindingBuilder builder = metadataBuilder
                 .endMetadata()
                 .withNewRoleRef()
                 .withKind(roleRef.isClusterWide() ? CLUSTER_ROLE : ROLE)
diff --git a/extensions/kubernetes/vanilla/deployment/src/main/java/io/quarkus/kubernetes/deployment/KubernetesCommonHelper.java b/extensions/kubernetes/vanilla/deployment/src/main/java/io/quarkus/kubernetes/deployment/KubernetesCommonHelper.java
index c0008f7f30615..00b288994d0ac 100644
--- a/extensions/kubernetes/vanilla/deployment/src/main/java/io/quarkus/kubernetes/deployment/KubernetesCommonHelper.java
+++ b/extensions/kubernetes/vanilla/deployment/src/main/java/io/quarkus/kubernetes/deployment/KubernetesCommonHelper.java
@@ -370,6 +370,7 @@ private static Collection<DecoratorBuildItem> createRbacDecorators(String name,
         Targetable.filteredByTarget(roleBindingsFromExtensions, target)
                 .map(rb -> new DecoratorBuildItem(target, new AddRoleBindingResourceDecorator(name,
                         Strings.isNotNullOrEmpty(rb.getName()) ? rb.getName() : name + "-" + rb.getRoleRef().getName(),
+                        rb.getNamespace(),
                         rb.getLabels(),
                         rb.getRoleRef(),
                         rb.getSubjects())))
@@ -405,6 +406,7 @@ private static Collection<DecoratorBuildItem> createRbacDecorators(String name,
             boolean clusterWide = roleBinding.clusterWide.orElse(defaultClusterWide);
             result.add(new DecoratorBuildItem(target, new AddRoleBindingResourceDecorator(name,
                     rbName,
+                    null, // todo: should namespace be providable via config?
                     roleBinding.labels,
                     new RoleRef(roleName, clusterWide),
                     subjects.toArray(new Subject[0]))));
@@ -443,6 +445,7 @@ private static Collection<DecoratorBuildItem> createRbacDecorators(String name,
                 requiresServiceAccount = true;
                 result.add(new DecoratorBuildItem(target, new AddRoleBindingResourceDecorator(name,
                         name,
+                        null, // todo: should namespace be providable via config?
                         Collections.emptyMap(),
                         new RoleRef(defaultRoleName, defaultClusterWide),
                         new Subject(null, SERVICE_ACCOUNT,
@@ -454,6 +457,7 @@ private static Collection<DecoratorBuildItem> createRbacDecorators(String name,
                 requiresServiceAccount = true;
                 result.add(new DecoratorBuildItem(target, new AddRoleBindingResourceDecorator(name,
                         name + "-" + DEFAULT_ROLE_NAME_VIEW,
+                        null, // todo: should namespace be providable via config?
                         Collections.emptyMap(),
                         new RoleRef(DEFAULT_ROLE_NAME_VIEW, true),
                         new Subject(null, SERVICE_ACCOUNT,