diff --git a/extensions/oidc/deployment/src/main/java/io/quarkus/oidc/deployment/devservices/keycloak/DevServicesConfig.java b/extensions/oidc/deployment/src/main/java/io/quarkus/oidc/deployment/devservices/keycloak/DevServicesConfig.java
index ab18a1cad3c45..1b61a94d74a84 100644
--- a/extensions/oidc/deployment/src/main/java/io/quarkus/oidc/deployment/devservices/keycloak/DevServicesConfig.java
+++ b/extensions/oidc/deployment/src/main/java/io/quarkus/oidc/deployment/devservices/keycloak/DevServicesConfig.java
@@ -10,6 +10,7 @@
 import io.quarkus.runtime.annotations.ConfigDocMapKey;
 import io.quarkus.runtime.annotations.ConfigGroup;
 import io.quarkus.runtime.annotations.ConfigItem;
+import io.quarkus.runtime.configuration.MemorySize;
 
 @ConfigGroup
 public class DevServicesConfig {
@@ -230,6 +231,14 @@ public String getGrantType() {
     @ConfigDocMapKey("environment-variable-name")
     public Map<String, String> containerEnv;
 
+    /**
+     * Memory limit for Keycloak container
+     * </p>
+     * If not specified, 1G is the default memory limit.
+     */
+    @ConfigItem(defaultValue = "1G")
+    public MemorySize containerMemLimit;
+
     @Override
     public boolean equals(Object o) {
         if (this == o)
@@ -247,11 +256,12 @@ public boolean equals(Object o) {
                 && Objects.equals(users, that.users)
                 && Objects.equals(javaOpts, that.javaOpts)
                 && Objects.equals(roles, that.roles)
-                && Objects.equals(containerEnv, that.containerEnv);
+                && Objects.equals(containerEnv, that.containerEnv)
+                && Objects.equals(containerMemLimit, that.containerMemLimit);
     }
 
     @Override
     public int hashCode() {
-        return Objects.hash(enabled, imageName, port, realmPath, realmName, users, roles, containerEnv);
+        return Objects.hash(enabled, imageName, port, realmPath, realmName, users, roles, containerEnv, containerMemLimit);
     }
 }
diff --git a/extensions/oidc/deployment/src/main/java/io/quarkus/oidc/deployment/devservices/keycloak/KeycloakDevServicesProcessor.java b/extensions/oidc/deployment/src/main/java/io/quarkus/oidc/deployment/devservices/keycloak/KeycloakDevServicesProcessor.java
index 9086c453f4e27..02aa287774398 100644
--- a/extensions/oidc/deployment/src/main/java/io/quarkus/oidc/deployment/devservices/keycloak/KeycloakDevServicesProcessor.java
+++ b/extensions/oidc/deployment/src/main/java/io/quarkus/oidc/deployment/devservices/keycloak/KeycloakDevServicesProcessor.java
@@ -65,6 +65,7 @@
 import io.quarkus.oidc.runtime.devui.OidcDevServicesUtils;
 import io.quarkus.runtime.LaunchMode;
 import io.quarkus.runtime.configuration.ConfigUtils;
+import io.quarkus.runtime.configuration.MemorySize;
 import io.smallrye.mutiny.TimeoutException;
 import io.smallrye.mutiny.Uni;
 import io.vertx.core.Vertx;
@@ -375,6 +376,7 @@ private RunningDevService startContainer(DockerStatusBuildItem dockerStatusBuild
                     capturedDevServicesConfiguration.javaOpts,
                     capturedDevServicesConfiguration.startCommand,
                     capturedDevServicesConfiguration.showLogs,
+                    capturedDevServicesConfiguration.containerMemLimit,
                     errors);
 
             timeout.ifPresent(oidcContainer::withStartupTimeout);
@@ -447,12 +449,13 @@ private static class QuarkusOidcContainer extends GenericContainer<QuarkusOidcCo
         private List<RealmRepresentation> realmReps = new LinkedList<>();
         private final Optional<String> startCommand;
         private final boolean showLogs;
+        private final MemorySize containerMemLimit;
         private final List<String> errors;
 
         public QuarkusOidcContainer(DockerImageName dockerImageName, OptionalInt fixedExposedPort, boolean useSharedNetwork,
                 List<String> realmPaths, Map<String, String> resources, String containerLabelValue,
                 boolean sharedContainer, Optional<String> javaOpts, Optional<String> startCommand, boolean showLogs,
-                List<String> errors) {
+                MemorySize containerMemLimit, List<String> errors) {
             super(dockerImageName);
 
             this.useSharedNetwork = useSharedNetwork;
@@ -473,6 +476,7 @@ public QuarkusOidcContainer(DockerImageName dockerImageName, OptionalInt fixedEx
             this.fixedExposedPort = fixedExposedPort;
             this.startCommand = startCommand;
             this.showLogs = showLogs;
+            this.containerMemLimit = containerMemLimit;
             this.errors = errors;
 
             super.setWaitStrategy(Wait.forLogMessage(".*Keycloak.*started.*", 1));
@@ -547,6 +551,13 @@ protected void configure() {
                 });
             }
 
+            super.withCreateContainerCmdModifier((container) -> Optional.ofNullable(container.getHostConfig())
+                    .ifPresent(hostConfig -> {
+                        final var limit = containerMemLimit.asLongValue();
+                        hostConfig.withMemory(limit);
+                        LOG.debug("Set container limit (bytes): " + limit);
+                    }));
+
             LOG.infof("Using %s powered Keycloak distribution", keycloakX ? "Quarkus" : "WildFly");
         }