diff --git a/modules/identity/src/Volo.Abp.Identity.Domain/Volo/Abp/Identity/IIdentityDataSeeder.cs b/modules/identity/src/Volo.Abp.Identity.Domain/Volo/Abp/Identity/IIdentityDataSeeder.cs
index dffe51120a..af67d32d5e 100644
--- a/modules/identity/src/Volo.Abp.Identity.Domain/Volo/Abp/Identity/IIdentityDataSeeder.cs
+++ b/modules/identity/src/Volo.Abp.Identity.Domain/Volo/Abp/Identity/IIdentityDataSeeder.cs
@@ -9,5 +9,6 @@ public interface IIdentityDataSeeder
     Task<IdentityDataSeedResult> SeedAsync(
         [NotNull] string adminEmail,
         [NotNull] string adminPassword,
-        Guid? tenantId = null);
+        Guid? tenantId = null,
+        string? adminUserName = null);
 }
diff --git a/modules/identity/src/Volo.Abp.Identity.Domain/Volo/Abp/Identity/IdentityDataSeedContributor.cs b/modules/identity/src/Volo.Abp.Identity.Domain/Volo/Abp/Identity/IdentityDataSeedContributor.cs
index b14ace4b05..9dc7539ef4 100644
--- a/modules/identity/src/Volo.Abp.Identity.Domain/Volo/Abp/Identity/IdentityDataSeedContributor.cs
+++ b/modules/identity/src/Volo.Abp.Identity.Domain/Volo/Abp/Identity/IdentityDataSeedContributor.cs
@@ -8,6 +8,8 @@ public class IdentityDataSeedContributor : IDataSeedContributor, ITransientDepen
 {
     public const string AdminEmailPropertyName = "AdminEmail";
     public const string AdminEmailDefaultValue = "admin@abp.io";
+    public const string AdminUserNamePropertyName = "AdminUserName";
+    public const string AdminUserNameDefaultValue = "admin";
     public const string AdminPasswordPropertyName = "AdminPassword";
     public const string AdminPasswordDefaultValue = "1q2w3E*";
 
@@ -23,7 +25,8 @@ public class IdentityDataSeedContributor : IDataSeedContributor, ITransientDepen
         return IdentityDataSeeder.SeedAsync(
             context?[AdminEmailPropertyName] as string ?? AdminEmailDefaultValue,
             context?[AdminPasswordPropertyName] as string ?? AdminPasswordDefaultValue,
-            context?.TenantId
+            context?.TenantId,
+            context?[AdminUserNamePropertyName] as string ?? AdminUserNameDefaultValue
         );
     }
 }
diff --git a/modules/identity/src/Volo.Abp.Identity.Domain/Volo/Abp/Identity/IdentityDataSeeder.cs b/modules/identity/src/Volo.Abp.Identity.Domain/Volo/Abp/Identity/IdentityDataSeeder.cs
index c09f2b030f..1c153effd1 100644
--- a/modules/identity/src/Volo.Abp.Identity.Domain/Volo/Abp/Identity/IdentityDataSeeder.cs
+++ b/modules/identity/src/Volo.Abp.Identity.Domain/Volo/Abp/Identity/IdentityDataSeeder.cs
@@ -44,7 +44,8 @@ public class IdentityDataSeeder : ITransientDependency, IIdentityDataSeeder
     public virtual async Task<IdentityDataSeedResult> SeedAsync(
         string adminEmail,
         string adminPassword,
-        Guid? tenantId = null)
+        Guid? tenantId = null,
+        string? adminUserName = null)
     {
         Check.NotNullOrWhiteSpace(adminEmail, nameof(adminEmail));
         Check.NotNullOrWhiteSpace(adminPassword, nameof(adminPassword));
@@ -55,7 +56,10 @@ public class IdentityDataSeeder : ITransientDependency, IIdentityDataSeeder
 
             var result = new IdentityDataSeedResult();
             //"admin" user
-            const string adminUserName = "admin";
+            if(adminUserName.IsNullOrWhiteSpace())
+            {
+                adminUserName = IdentityDataSeedContributor.AdminUserNameDefaultValue;
+            }
             var adminUser = await UserRepository.FindByNormalizedUserNameAsync(
                 LookupNormalizer.NormalizeName(adminUserName)
             );