diff --git a/BookStore.API/Controllers/CustomersController.cs b/BookStore.API/Controllers/CustomersController.cs
new file mode 100644
index 0000000..7086203
--- /dev/null
+++ b/BookStore.API/Controllers/CustomersController.cs
@@ -0,0 +1,110 @@
+using BookStore.API.DTOs;
+using BookStore.DAL;
+using Microsoft.AspNetCore.Mvc;
+using Microsoft.EntityFrameworkCore;
+
+namespace BookStore.API.Controllers
+{
+    [ApiController]
+    [Route("api/[controller]")]
+    public class CustomersController : ControllerBase
+    {
+        private readonly BookStoreContext _context;
+
+        public CustomersController(BookStoreContext context)
+        {
+            _context = context;
+        }
+
+        // GET: api/customers
+        [HttpGet]
+        public async Task<IActionResult> GetAll()
+        {
+            var customers = await _context.Customers
+                .Include(c => c.Orders)
+                .Select(c => new CustomerDto
+                {
+                    Id = c.Id,
+                    Name = c.Name,
+                    Email = c.Email,
+
+                    OrderIds = c.Orders.Select(o => o.Id).ToList()
+                })
+                .ToListAsync();
+
+            return Ok(customers);
+        }
+
+        // GET: api/customers/5
+        [HttpGet("{id}")]
+        public async Task<IActionResult> GetById(int id)
+        {
+            var customer = await _context.Customers
+                .Include(c => c.Orders)
+                .Where(c => c.Id == id)
+                .Select(c => new CustomerDto
+                {
+                    Id = c.Id,
+                    Name = c.Name,
+                    Email = c.Email,
+
+                    OrderIds = c.Orders.Select(o => o.Id).ToList()
+                })
+                .FirstOrDefaultAsync();
+
+            if (customer == null)
+                return NotFound();
+
+            return Ok(customer);
+        }
+
+        // POST: api/customers
+        [HttpPost]
+        public async Task<IActionResult> Create(CreateCustomerDto dto)
+        {
+            var customer = new Customer
+            {
+                Name = dto.Name,
+                Email = dto.Email
+            };
+
+            _context.Customers.Add(customer);
+            await _context.SaveChangesAsync();
+
+            return CreatedAtAction(nameof(GetById), new { id = customer.Id }, null);
+        }
+
+        // PUT: api/customers/5
+        [HttpPut("{id}")]
+        public async Task<IActionResult> Update(int id, CreateCustomerDto dto)
+        {
+            var customer = await _context.Customers
+                .FirstOrDefaultAsync(c => c.Id == id);
+
+            if (customer == null)
+                return NotFound();
+
+            customer.Name = dto.Name;
+            customer.Email = dto.Email;
+
+            await _context.SaveChangesAsync();
+
+            return NoContent();
+        }
+
+        // DELETE: api/customers/5
+        [HttpDelete("{id}")]
+        public async Task<IActionResult> Delete(int id)
+        {
+            var customer = await _context.Customers.FindAsync(id);
+
+            if (customer == null)
+                return NotFound();
+
+            _context.Customers.Remove(customer);
+            await _context.SaveChangesAsync();
+
+            return NoContent();
+        }
+    }
+}
diff --git a/BookStore.API/DTOs/CustomerDto.cs b/BookStore.API/DTOs/CustomerDto.cs
new file mode 100644
index 0000000..43bda0e
--- /dev/null
+++ b/BookStore.API/DTOs/CustomerDto.cs
@@ -0,0 +1,17 @@
+namespace BookStore.API.DTOs
+{
+    public class CustomerDto
+    {
+        public int Id { get; set; }
+        public string? Name { get; set; }
+        public string? Email { get; set; }
+
+        public List<int> OrderIds { get; set; } = new();
+    }
+
+    public class CreateCustomerDto
+    {
+        public string? Name { get; set; }
+        public string? Email { get; set; }
+    }
+}
diff --git a/BookStoreDb.sql b/BookStoreDb.sql
index acc38db..5c82e6e 100644
--- a/BookStoreDb.sql
+++ b/BookStoreDb.sql
@@ -7,3 +7,23 @@ VALUES ('Programming');
 INSERT INTO Books (Title, ISBN, Price, Stock, CategoryId, PublisherId)
 VALUES ('Clean Code', '9780132350884', 29.99, 10, 1, 1);
 
+INSERT INTO Customers (Name, Email)
+VALUES 
+('Ali Khan', 'ali.khan@example.com'),
+('Sara Ahmed', 'sara.ahmed@example.com'),
+('John Smith', 'john.smith@example.com'),
+('Emily Johnson', 'emily.johnson@example.com'),
+('Omar Farooq', 'omar.farooq@example.com'),
+('Ayesha Malik', 'ayesha.malik@example.com'),
+('Hassan Raza', 'hassan.raza@example.com'),
+('Fatima Noor', 'fatima.noor@example.com'),
+('David Brown', 'david.brown@example.com'),
+('Michael Scott', 'michael.scott@dundermifflin.com'),
+('Pam Beesly', 'pam.beesly@dundermifflin.com'),
+('Jim Halpert', 'jim.halpert@dundermifflin.com'),
+('Dwight Schrute', 'dwight.schrute@dundermifflin.com'),
+('Zain Ali', 'zain.ali@example.com'),
+('Noor Fatima', 'noor.fatima@example.com');
+
+
+