diff --git a/lib/fixtures/keycloak.go b/lib/fixtures/keycloak.go
index 00df88dd32..bf8848479e 100644
--- a/lib/fixtures/keycloak.go
+++ b/lib/fixtures/keycloak.go
@@ -7,6 +7,7 @@ import (
 	"errors"
 	"fmt"
 	"log/slog"
+	"math"
 	"net/http"
 	"strings"
 
@@ -24,17 +25,23 @@ type KeycloakData struct {
 type RealmToCreate struct {
 	RealmRepresentation gocloak.RealmRepresentation `yaml:"realm_repepresentation" json:"realm_repepresentation"`
 	Clients             []Client                    `yaml:"clients,omitempty" json:"clients,omitempty"`
-	Users               []gocloak.User              `yaml:"users,omitempty" json:"users,omitempty"`
+	Users               []User                      `yaml:"users,omitempty" json:"users,omitempty"`
 	CustomRealmRoles    []gocloak.Role              `yaml:"custom_realm_roles,omitempty" json:"custom_realm_roles,omitempty"`
 	CustomClientRoles   map[string][]gocloak.Role   `yaml:"custom_client_roles,omitempty" json:"custom_client_roles,omitempty"`
 	CustomGroups        []gocloak.Group             `yaml:"custom_groups,omitempty" json:"custom_groups,omitempty"`
 	TokenExchanges      []TokenExchange             `yaml:"token_exchanges,omitempty" json:"token_exchanges,omitempty"`
 }
 
+type User struct {
+	gocloak.User
+	Copies int `yaml:"copies,omitempty" json:"copies,omitempty"`
+}
+
 type Client struct {
 	Client        gocloak.Client      `yaml:"client" json:"client"`
 	SaRealmRoles  []string            `yaml:"sa_realm_roles,omitempty" json:"sa_realm_roles,omitempty"`
 	SaClientRoles map[string][]string `yaml:"sa_client_roles,omitempty" json:"sa_client_roles,omitempty"`
+	Copies        int                 `yaml:"copies,omitempty" json:"copies,omitempty"`
 }
 
 type TokenExchange struct {
@@ -379,7 +386,7 @@ func SetupCustomKeycloak(ctx context.Context, kcParams KeycloakConnectParams, ke
 		}
 
 		// create the clients
-		if realmToCreate.Clients != nil {
+		if realmToCreate.Clients != nil { //nolint:nestif // need to create clients in order
 			for _, customClient := range realmToCreate.Clients {
 				realmRoles, err := getRealmRolesByList(ctx, kcConnectParams.Realm, client, token, customClient.SaRealmRoles)
 				if err != nil {
@@ -401,6 +408,21 @@ func SetupCustomKeycloak(ctx context.Context, kcParams KeycloakConnectParams, ke
 				if err != nil {
 					return err
 				}
+				if customClient.Copies < 1 {
+					continue
+				}
+				baseClientID := *customClient.Client.ClientID
+				baseClientName := *customClient.Client.Name
+				numDigits := int(math.Log10(float64(customClient.Copies-1))) + 1
+				padFormat := fmt.Sprintf("%%s-%%%dd", numDigits)
+				for i := 0; i < customClient.Copies; i++ {
+					customClient.Client.ClientID = gocloak.StringP(fmt.Sprintf(padFormat, baseClientID, i))
+					customClient.Client.Name = gocloak.StringP(fmt.Sprintf(padFormat, baseClientName, i))
+					_, err = createClient(ctx, client, token, &kcConnectParams, customClient.Client, realmRoles, clientRoleMap)
+					if err != nil {
+						return err
+					}
+				}
 			}
 		}
 
@@ -419,10 +441,25 @@ func SetupCustomKeycloak(ctx context.Context, kcParams KeycloakConnectParams, ke
 		// create the users
 		if realmToCreate.Users != nil {
 			for _, customUser := range realmToCreate.Users {
-				_, err = createUser(ctx, client, token, &kcConnectParams, customUser)
+				_, err = createUser(ctx, client, token, &kcConnectParams, customUser.User)
 				if err != nil {
 					return err
 				}
+				if customUser.Copies < 1 {
+					continue
+				}
+				baseUserName := *customUser.User.Username
+				baseEmail := *customUser.User.Email
+				numDigits := int(math.Log10(float64(customUser.Copies-1))) + 1
+				padFormat := fmt.Sprintf("%%s-%%%dd", numDigits)
+				for i := 0; i < customUser.Copies; i++ {
+					customUser.User.Username = gocloak.StringP(fmt.Sprintf(padFormat, baseUserName, i))
+					customUser.User.Email = gocloak.StringP(fmt.Sprintf("%d-%s", i, baseEmail))
+					_, err = createUser(ctx, client, token, &kcConnectParams, customUser.User)
+					if err != nil {
+						return err
+					}
+				}
 			}
 		}
 
diff --git a/service/cmd/keycloak_data.yaml b/service/cmd/keycloak_data.yaml
index 201a2b6544..57ef4698ee 100644
--- a/service/cmd/keycloak_data.yaml
+++ b/service/cmd/keycloak_data.yaml
@@ -21,7 +21,7 @@ realms:
     custom_groups:
       - name: mygroup
         attributes:
-          mygroupattribute: 
+          mygroupattribute:
             - mygroupvalue
     clients:
       - client:
@@ -33,8 +33,9 @@ realms:
           secret: secret
           protocolMappers:
             - *customAudMapper
-        sa_realm_roles: 
+        sa_realm_roles:
           - opentdf-admin
+        copies: 10
       - client:
           clientID: opentdf-sdk
           enabled: true
@@ -44,7 +45,7 @@ realms:
           secret: secret
           protocolMappers:
             - *customAudMapper
-        sa_realm_roles: 
+        sa_realm_roles:
           - opentdf-standard
       - client:
           clientID: tdf-entity-resolution
@@ -90,9 +91,9 @@ realms:
           - value: testuser123
             type: password
         attributes:
-          superhero_name: 
+          superhero_name:
             - thor
-          superhero_group: 
+          superhero_group:
             - avengers
         groups:
           - mygroup
@@ -106,8 +107,7 @@ realms:
             - query-users
           tdf-entity-resolution:
             - entity-resolution-test-role
+        copies: 10
     token_exchanges:
       - start_client: opentdf
         target_client: opentdf-sdk
-
- 
\ No newline at end of file