diff --git a/backend/LeedsBeerQuest.API/LeedsBeerQuest.API.Tests/Controllers/CategoryControllerTests.cs b/backend/LeedsBeerQuest.API/LeedsBeerQuest.API.Tests/Controllers/CategoryControllerTests.cs
new file mode 100644
index 0000000..397d5bc
--- /dev/null
+++ b/backend/LeedsBeerQuest.API/LeedsBeerQuest.API.Tests/Controllers/CategoryControllerTests.cs
@@ -0,0 +1,37 @@
+using System.Collections.Generic;
+using System.Linq;
+using System.Threading.Tasks;
+using LeedsBeerQuest.API.Controllers;
+using LeedsBeerQuest.API.Data.Models;
+using LeedsBeerQuest.API.Data.Services.Interfaces;
+using LeedsBeerQuest.API.Tests.Data.Services;
+using LeedsBeerQuest.API.Tests.TestHelpers;
+using NSubstitute;
+using NUnit.Framework;
+
+namespace LeedsBeerQuest.API.Tests.Controllers;
+
+[TestFixture]
+public class CategoryControllerTests
+{
+    private ICategoryService _categoryService;
+    private CategoryController _categoryController;
+
+    [SetUp]
+    public void SetUp()
+    {
+        _categoryService = Substitute.For<ICategoryService>();
+        _categoryController = new CategoryController(_categoryService);
+    }
+
+    [Test]
+    public async Task GetCategories_ReturnsAllCategories()
+    {
+        _categoryService.GetCategories().Returns(TestData.CategoryTestData);
+
+        var result = await _categoryController.GetCategories();
+        var resultObject = ControllerTestHelper.ActionResultToOkResultValue<IEnumerable<Category>>(result);
+
+        Assert.AreEqual(TestData.CategoryTestData.Length, resultObject.Count());
+    }
+}
\ No newline at end of file
diff --git a/backend/LeedsBeerQuest.API/LeedsBeerQuest.API.Tests/Data/Services/CategoryServiceTests.cs b/backend/LeedsBeerQuest.API/LeedsBeerQuest.API.Tests/Data/Services/CategoryServiceTests.cs
new file mode 100644
index 0000000..c6ca394
--- /dev/null
+++ b/backend/LeedsBeerQuest.API/LeedsBeerQuest.API.Tests/Data/Services/CategoryServiceTests.cs
@@ -0,0 +1,47 @@
+using System;
+using System.Linq;
+using System.Threading.Tasks;
+using LeedsBeerQuest.API.Data.Contexts;
+using LeedsBeerQuest.API.Data.Models;
+using LeedsBeerQuest.API.Data.Services;
+using LeedsBeerQuest.API.Data.Services.Interfaces;
+using Microsoft.EntityFrameworkCore;
+using NUnit.Framework;
+
+namespace LeedsBeerQuest.API.Tests.Data.Services;
+
+[TestFixture]
+public class CategoryServiceTests
+{
+    private LeedsBeerQuestDbContext _context;
+    private ICategoryService _categoryService;
+
+    [SetUp]
+    public void SetUp()
+    {
+        var builder = new DbContextOptionsBuilder<LeedsBeerQuestDbContext>()
+            .UseInMemoryDatabase($"CategoryServiceTests.{Guid.NewGuid().ToString()}");
+        _context = new LeedsBeerQuestDbContext(builder.Options);
+
+        _categoryService = new CategoryService(_context);
+    }
+
+    [Test]
+    public async Task GetCategories_ReturnsAllCategories_WhenAllCategoriesArePresentInDatabase()
+    {
+        var categoryTestData = await seedCategoryTestData();
+
+        var result = await _categoryService.GetCategories();
+
+        Assert.AreEqual(categoryTestData.Length, result.Count());
+    }
+
+    private async Task<Category[]> seedCategoryTestData()
+    {
+        var categoryTestData = TestData.CategoryTestData;
+        _context.Categories.AddRange(categoryTestData);
+        await _context.SaveChangesAsync();
+
+        return categoryTestData;
+    }
+}
\ No newline at end of file
diff --git a/backend/LeedsBeerQuest.API/LeedsBeerQuest.API.Tests/Data/Services/TestData.cs b/backend/LeedsBeerQuest.API/LeedsBeerQuest.API.Tests/Data/Services/TestData.cs
index 5b08319..b45086b 100644
--- a/backend/LeedsBeerQuest.API/LeedsBeerQuest.API.Tests/Data/Services/TestData.cs
+++ b/backend/LeedsBeerQuest.API/LeedsBeerQuest.API.Tests/Data/Services/TestData.cs
@@ -6,7 +6,7 @@ namespace LeedsBeerQuest.API.Tests.Data.Services;
 
 public static class TestData
 {
-    public static readonly IEnumerable<Venue> VenueTestData = new[]
+    public static IEnumerable<Venue> VenueTestData => new[]
     {
         new Venue
         {
@@ -34,4 +34,34 @@ public static class TestData
             Tags = new List<Tag>()
         }
     };
+
+    public static Category[] CategoryTestData => new[]
+    {
+        new Category
+        {
+            Id = 1,
+            Name = "Category 1"
+        },
+        new Category
+        {
+            Id = 2,
+            Name = "Category 2"
+        },
+        new Category
+        {
+            Id = 3,
+            Name = "Category 3"
+        },
+        new Category
+        {
+            Id = 4,
+            Name = "Category 4"
+        },
+        new Category
+        {
+            Id = 5,
+            Name = "Category 5"
+        },
+
+    };
 }
\ No newline at end of file
diff --git a/backend/LeedsBeerQuest.API/LeedsBeerQuest.API/Controllers/CategoryController.cs b/backend/LeedsBeerQuest.API/LeedsBeerQuest.API/Controllers/CategoryController.cs
index 5b27ac7..68c9c2b 100644
--- a/backend/LeedsBeerQuest.API/LeedsBeerQuest.API/Controllers/CategoryController.cs
+++ b/backend/LeedsBeerQuest.API/LeedsBeerQuest.API/Controllers/CategoryController.cs
@@ -1,6 +1,23 @@
+using LeedsBeerQuest.API.Data.Services.Interfaces;
+using Microsoft.AspNetCore.Mvc;
+
 namespace LeedsBeerQuest.API.Controllers;
 
-public class CategoryController
+[ApiController]
+[Route("[controller]")]
+public class CategoryController : ControllerBase
 {
-    
+    private readonly ICategoryService _categoryService;
+
+    public CategoryController(ICategoryService categoryService)
+    {
+        _categoryService = categoryService;
+    }
+
+    [HttpGet]
+    public async Task<IActionResult> GetCategories()
+    {
+        var categories = await _categoryService.GetCategories();
+        return Ok(categories);
+    }
 }
\ No newline at end of file
diff --git a/backend/LeedsBeerQuest.API/LeedsBeerQuest.API/Data/Services/CategoryService.cs b/backend/LeedsBeerQuest.API/LeedsBeerQuest.API/Data/Services/CategoryService.cs
index 792fddc..a432d56 100644
--- a/backend/LeedsBeerQuest.API/LeedsBeerQuest.API/Data/Services/CategoryService.cs
+++ b/backend/LeedsBeerQuest.API/LeedsBeerQuest.API/Data/Services/CategoryService.cs
@@ -1,6 +1,18 @@
+using Microsoft.EntityFrameworkCore;
+using LeedsBeerQuest.API.Data.Contexts;
+using LeedsBeerQuest.API.Data.Models;
+using LeedsBeerQuest.API.Data.Services.Interfaces;
+
 namespace LeedsBeerQuest.API.Data.Services;
 
-public class CategoryService
+public class CategoryService : ICategoryService
 {
-    
+    private readonly LeedsBeerQuestDbContext _context;
+
+    public CategoryService(LeedsBeerQuestDbContext context)
+    {
+        _context = context;
+    }
+    public async Task<IEnumerable<Category>> GetCategories() =>
+        await _context.Categories.ToListAsync();
 }
\ No newline at end of file
diff --git a/backend/LeedsBeerQuest.API/LeedsBeerQuest.API/Data/Services/Interfaces/ICategoryService.cs b/backend/LeedsBeerQuest.API/LeedsBeerQuest.API/Data/Services/Interfaces/ICategoryService.cs
index 735d103..af0dafa 100644
--- a/backend/LeedsBeerQuest.API/LeedsBeerQuest.API/Data/Services/Interfaces/ICategoryService.cs
+++ b/backend/LeedsBeerQuest.API/LeedsBeerQuest.API/Data/Services/Interfaces/ICategoryService.cs
@@ -1,6 +1,8 @@
+using LeedsBeerQuest.API.Data.Models;
+
 namespace LeedsBeerQuest.API.Data.Services.Interfaces;
 
 public interface ICategoryService
 {
-    
+    public Task<IEnumerable<Category>> GetCategories();
 }
\ No newline at end of file
diff --git a/backend/LeedsBeerQuest.API/LeedsBeerQuest.API/ServiceDependencies.cs b/backend/LeedsBeerQuest.API/LeedsBeerQuest.API/ServiceDependencies.cs
index b12936f..27ea87e 100644
--- a/backend/LeedsBeerQuest.API/LeedsBeerQuest.API/ServiceDependencies.cs
+++ b/backend/LeedsBeerQuest.API/LeedsBeerQuest.API/ServiceDependencies.cs
@@ -14,5 +14,6 @@ public static class ServiceDependencies
 
         serviceCollection.AddTransient(_ => new LeedsBeerQuestDbContext(dbOptions.Options));
         serviceCollection.AddScoped<IVenueService, VenueService>();
+        serviceCollection.AddScoped<ICategoryService, CategoryService>();
     }
 }
\ No newline at end of file