diff --git a/Webshop.Api/Controllers/Admin/HomeController.cs b/Webshop.Api/Controllers/Admin/HomeController.cs
new file mode 100644
index 0000000..d080c2c
--- /dev/null
+++ b/Webshop.Api/Controllers/Admin/HomeController.cs
@@ -0,0 +1,44 @@
+// src/Webshop.Api/Controllers/Admin/AdminSuppliersController.cs
+using Microsoft.AspNetCore.Authorization;
+using Microsoft.AspNetCore.Mvc;
+using Webshop.Application.DTOs; // SupplierDto
+using Webshop.Application.Services.Admin;
+
+namespace Webshop.Api.Controllers.Admin
+{
+    [ApiController]
+    [Route("api/v1/admin/[controller]")] // z.B. /api/v1/admin/suppliers
+    [Authorize(Roles = "Admin")] // Nur Admins
+    public class AdminSuppliersController : ControllerBase
+    {
+        private readonly AdminSupplierService _adminSupplierService;
+
+        public AdminSuppliersController(AdminSupplierService adminSupplierService)
+        {
+            _adminSupplierService = adminSupplierService;
+        }
+
+        [HttpGet]
+        public async Task<ActionResult<IEnumerable<SupplierDto>>> GetAllSuppliers()
+        {
+            var suppliers = await _adminSupplierService.GetAllSuppliersAsync();
+            return Ok(suppliers);
+        }
+
+        [HttpPost]
+        public async Task<ActionResult<SupplierDto>> CreateSupplier([FromBody] SupplierDto supplierDto)
+        {
+            if (!ModelState.IsValid) return BadRequest(ModelState);
+            var createdSupplier = await _adminSupplierService.CreateSupplierAsync(supplierDto);
+            return CreatedAtAction(nameof(GetSupplierById), new { id = createdSupplier.Id }, createdSupplier);
+        }
+
+        [HttpGet("{id}")]
+        public async Task<ActionResult<SupplierDto>> GetSupplierById(Guid id)
+        {
+            var supplier = await _adminSupplierService.GetSupplierByIdAsync(id);
+            if (supplier == null) return NotFound();
+            return Ok(supplier);
+        }
+    }
+}
\ No newline at end of file
diff --git a/Webshop.Api/Program.cs b/Webshop.Api/Program.cs
index 40c1466..b3f5c2a 100644
--- a/Webshop.Api/Program.cs
+++ b/Webshop.Api/Program.cs
@@ -66,6 +66,7 @@ builder.Services.AddAuthorization(); // Aktiviert die Autorisierung
 
 // 4. Unsere eigenen Interfaces und Klassen registrieren (Dependency Injection)
 builder.Services.AddScoped<IProductRepository, ProductRepository>();
+builder.Services.AddScoped<ISupplierRepository, SupplierRepository>(); // NEU
 
 // AUTH Services
 builder.Services.AddScoped<IAuthService, AuthService>();
@@ -76,6 +77,7 @@ builder.Services.AddScoped<ProductService>(); // Ihr ProductService ist hier reg
 // ADMIN Services
 builder.Services.AddScoped<AdminUserService>();
 builder.Services.AddScoped<AdminProductService>();
+builder.Services.AddScoped<AdminSupplierService>(); // NEU
 
 // CUSTOMER Services (später Implementierungen hinzufügen)
 // builder.Services.AddScoped<CustomerOrderService>();
diff --git a/Webshop.Application/DTOs/SupplierDto.cs b/Webshop.Application/DTOs/SupplierDto.cs
new file mode 100644
index 0000000..eab65c0
--- /dev/null
+++ b/Webshop.Application/DTOs/SupplierDto.cs
@@ -0,0 +1,14 @@
+// src/Webshop.Application/DTOs/SupplierDto.cs
+namespace Webshop.Application.DTOs
+{
+    public class SupplierDto
+    {
+        public Guid Id { get; set; } = Guid.NewGuid(); // Für PUT/GET, bei POST optional
+        public string Name { get; set; } = string.Empty;
+        public string? ContactPerson { get; set; }
+        public string? Email { get; set; }
+        public string? PhoneNumber { get; set; }
+        public Guid? AddressId { get; set; } // Wenn Sie Adressen haben, sonst null
+        public string? Notes { get; set; }
+    }
+}
\ No newline at end of file
diff --git a/Webshop.Application/Services/Admin/AdminSupplierService.cs b/Webshop.Application/Services/Admin/AdminSupplierService.cs
new file mode 100644
index 0000000..5c9755c
--- /dev/null
+++ b/Webshop.Application/Services/Admin/AdminSupplierService.cs
@@ -0,0 +1,68 @@
+// src/Webshop.Application/Services/Admin/AdminSupplierService.cs
+using Webshop.Application.DTOs; // SupplierDto
+using Webshop.Domain.Entities;
+using Webshop.Domain.Interfaces;
+using System.Collections.Generic; // Für IEnumerable
+
+namespace Webshop.Application.Services.Admin
+{
+    public class AdminSupplierService
+    {
+        private readonly ISupplierRepository _supplierRepository;
+
+        public AdminSupplierService(ISupplierRepository supplierRepository)
+        {
+            _supplierRepository = supplierRepository;
+        }
+
+        public async Task<IEnumerable<SupplierDto>> GetAllSuppliersAsync()
+        {
+            var suppliers = await _supplierRepository.GetAllSuppliersAsync();
+            return suppliers.Select(s => new SupplierDto
+            {
+                Id = s.Id,
+                Name = s.Name,
+                ContactPerson = s.ContactPerson,
+                Email = s.Email,
+                PhoneNumber = s.PhoneNumber,
+                AddressId = s.AddressId,
+                Notes = s.Notes
+            }).ToList();
+        }
+
+        public async Task<SupplierDto?> GetSupplierByIdAsync(Guid id)
+        {
+            var supplier = await _supplierRepository.GetSupplierByIdAsync(id);
+            if (supplier == null) return null;
+            return new SupplierDto
+            {
+                Id = supplier.Id,
+                Name = supplier.Name,
+                ContactPerson = supplier.ContactPerson,
+                Email = supplier.Email,
+                PhoneNumber = supplier.PhoneNumber,
+                AddressId = supplier.AddressId,
+                Notes = supplier.Notes
+            };
+        }
+
+        public async Task<SupplierDto> CreateSupplierAsync(SupplierDto supplierDto)
+        {
+            var newSupplier = new Supplier
+            {
+                Id = Guid.NewGuid(), // API generiert die ID
+                Name = supplierDto.Name,
+                ContactPerson = supplierDto.ContactPerson,
+                Email = supplierDto.Email,
+                PhoneNumber = supplierDto.PhoneNumber,
+                AddressId = supplierDto.AddressId,
+                Notes = supplierDto.Notes
+            };
+            await _supplierRepository.AddSupplierAsync(newSupplier);
+            supplierDto.Id = newSupplier.Id; // ID zurückschreiben
+            return supplierDto;
+        }
+
+        // TODO: UpdateSupplierAsync, DeleteSupplierAsync
+    }
+}
\ No newline at end of file
diff --git a/Webshop.Domain/Interfaces/ISupplierRepository.cs b/Webshop.Domain/Interfaces/ISupplierRepository.cs
new file mode 100644
index 0000000..8143532
--- /dev/null
+++ b/Webshop.Domain/Interfaces/ISupplierRepository.cs
@@ -0,0 +1,14 @@
+// src/Webshop.Domain/Interfaces/ISupplierRepository.cs
+using Webshop.Domain.Entities;
+
+namespace Webshop.Domain.Interfaces
+{
+    public interface ISupplierRepository
+    {
+        Task<IEnumerable<Supplier>> GetAllSuppliersAsync();
+        Task<Supplier?> GetSupplierByIdAsync(Guid id);
+        Task AddSupplierAsync(Supplier supplier);
+        Task UpdateSupplierAsync(Supplier supplier);
+        Task DeleteSupplierAsync(Guid id);
+    }
+}
\ No newline at end of file
diff --git a/Webshop.Infrastructure/Migrations/20250723094917_InitialCreate.Designer.cs b/Webshop.Infrastructure/Migrations/20250723102855_AddSuppliersAndOtherEntities.Designer.cs
similarity index 99%
rename from Webshop.Infrastructure/Migrations/20250723094917_InitialCreate.Designer.cs
rename to Webshop.Infrastructure/Migrations/20250723102855_AddSuppliersAndOtherEntities.Designer.cs
index e98fc1d..65dee36 100644
--- a/Webshop.Infrastructure/Migrations/20250723094917_InitialCreate.Designer.cs
+++ b/Webshop.Infrastructure/Migrations/20250723102855_AddSuppliersAndOtherEntities.Designer.cs
@@ -12,8 +12,8 @@ using Webshop.Infrastructure.Data;
 namespace Webshop.Infrastructure.Migrations
 {
     [DbContext(typeof(ApplicationDbContext))]
-    [Migration("20250723094917_InitialCreate")]
-    partial class InitialCreate
+    [Migration("20250723102855_AddSuppliersAndOtherEntities")]
+    partial class AddSuppliersAndOtherEntities
     {
         /// <inheritdoc />
         protected override void BuildTargetModel(ModelBuilder modelBuilder)
diff --git a/Webshop.Infrastructure/Migrations/20250723094917_InitialCreate.cs b/Webshop.Infrastructure/Migrations/20250723102855_AddSuppliersAndOtherEntities.cs
similarity index 99%
rename from Webshop.Infrastructure/Migrations/20250723094917_InitialCreate.cs
rename to Webshop.Infrastructure/Migrations/20250723102855_AddSuppliersAndOtherEntities.cs
index d58ae5b..690c06e 100644
--- a/Webshop.Infrastructure/Migrations/20250723094917_InitialCreate.cs
+++ b/Webshop.Infrastructure/Migrations/20250723102855_AddSuppliersAndOtherEntities.cs
@@ -7,7 +7,7 @@ using Npgsql.EntityFrameworkCore.PostgreSQL.Metadata;
 namespace Webshop.Infrastructure.Migrations
 {
     /// <inheritdoc />
-    public partial class InitialCreate : Migration
+    public partial class AddSuppliersAndOtherEntities : Migration
     {
         /// <inheritdoc />
         protected override void Up(MigrationBuilder migrationBuilder)
diff --git a/Webshop.Infrastructure/Repositories/SupplierRepository.cs b/Webshop.Infrastructure/Repositories/SupplierRepository.cs
new file mode 100644
index 0000000..19c4e59
--- /dev/null
+++ b/Webshop.Infrastructure/Repositories/SupplierRepository.cs
@@ -0,0 +1,50 @@
+// src/Webshop.Infrastructure/Repositories/SupplierRepository.cs
+using Microsoft.EntityFrameworkCore; // Für ToListAsync
+using Webshop.Domain.Entities;
+using Webshop.Domain.Interfaces;
+using Webshop.Infrastructure.Data;
+
+namespace Webshop.Infrastructure.Repositories
+{
+    public class SupplierRepository : ISupplierRepository
+    {
+        private readonly ApplicationDbContext _context;
+
+        public SupplierRepository(ApplicationDbContext context)
+        {
+            _context = context;
+        }
+
+        public async Task<IEnumerable<Supplier>> GetAllSuppliersAsync()
+        {
+            return await _context.Suppliers.ToListAsync();
+        }
+
+        public async Task<Supplier?> GetSupplierByIdAsync(Guid id)
+        {
+            return await _context.Suppliers.FindAsync(id);
+        }
+
+        public async Task AddSupplierAsync(Supplier supplier)
+        {
+            _context.Suppliers.Add(supplier);
+            await _context.SaveChangesAsync();
+        }
+
+        public async Task UpdateSupplierAsync(Supplier supplier)
+        {
+            _context.Suppliers.Update(supplier);
+            await _context.SaveChangesAsync();
+        }
+
+        public async Task DeleteSupplierAsync(Guid id)
+        {
+            var supplier = await _context.Suppliers.FindAsync(id);
+            if (supplier != null)
+            {
+                _context.Suppliers.Remove(supplier);
+                await _context.SaveChangesAsync();
+            }
+        }
+    }
+}
\ No newline at end of file