diff --git a/examples/WireMock.Net.ConsoleApplication/Program.cs b/examples/WireMock.Net.ConsoleApplication/Program.cs
index 3541cb74..c588efdd 100644
--- a/examples/WireMock.Net.ConsoleApplication/Program.cs
+++ b/examples/WireMock.Net.ConsoleApplication/Program.cs
@@ -20,6 +20,7 @@ namespace WireMock.Net.ConsoleApplication
 
             server
                 .Given(Request.Create().WithPath(u => u.Contains("x")).UsingGet())
+                .AtPriority(4)
                 .RespondWith(Response.Create()
                     .WithStatusCode(200)
                     .WithHeader("Content-Type", "application/json")
diff --git a/src/WireMock.Net/Admin/Mappings/MappingModel.cs b/src/WireMock.Net/Admin/Mappings/MappingModel.cs
index 84f100a9..797fa4fd 100644
--- a/src/WireMock.Net/Admin/Mappings/MappingModel.cs
+++ b/src/WireMock.Net/Admin/Mappings/MappingModel.cs
@@ -15,6 +15,14 @@ namespace WireMock.Admin.Mappings
         /// </value>
         public Guid? Guid { get; set; }
 
+        /// <summary>
+        /// Gets or sets the priority.
+        /// </summary>
+        /// <value>
+        /// The priority.
+        /// </value>
+        public int? Priority { get; set; }
+
         /// <summary>
         /// Gets or sets the request.
         /// </summary>
diff --git a/src/WireMock.Net/Mapping.cs b/src/WireMock.Net/Mapping.cs
index b3dfdb64..319f3c0b 100644
--- a/src/WireMock.Net/Mapping.cs
+++ b/src/WireMock.Net/Mapping.cs
@@ -9,6 +9,14 @@ namespace WireMock
     /// </summary>
     public class Mapping
     {
+        /// <summary>
+        /// Gets the priority.
+        /// </summary>
+        /// <value>
+        /// The priority.
+        /// </value>
+        public int Priority { get; }
+
         /// <summary>
         /// Gets the unique identifier.
         /// </summary>
@@ -33,8 +41,10 @@ namespace WireMock
         /// <param name="guid">The the unique identifier.</param>
         /// <param name="requestMatcher">The request matcher.</param>
         /// <param name="provider">The provider.</param>
-        public Mapping(Guid guid, IRequestMatcher requestMatcher, IResponseProvider provider)
+        /// <param name="priority">The priority for this mapping.</param>
+        public Mapping(Guid guid, IRequestMatcher requestMatcher, IResponseProvider provider, int priority)
         {
+            Priority = priority;
             Guid = guid;
             RequestMatcher = requestMatcher;
             Provider = provider;
diff --git a/src/WireMock.Net/Server/FluentMockServer.Admin.cs b/src/WireMock.Net/Server/FluentMockServer.Admin.cs
index dcd03164..91a05bea 100644
--- a/src/WireMock.Net/Server/FluentMockServer.Admin.cs
+++ b/src/WireMock.Net/Server/FluentMockServer.Admin.cs
@@ -124,11 +124,14 @@ namespace WireMock.Server
             var requestBuilder = InitRequestBuilder(mappingModel);
             var responseBuilder = InitResponseBuilder(mappingModel);
 
-            IRespondWithAProviderGuid respondProvider = Given(requestBuilder);
+            IRespondWithAProvider respondProvider = Given(requestBuilder);
 
             if (mappingModel.Guid != null && mappingModel.Guid != Guid.Empty)
                 respondProvider = respondProvider.WithGuid(mappingModel.Guid.Value);
 
+            if (mappingModel.Priority != null)
+                respondProvider = respondProvider.AtPriority(mappingModel.Priority.Value);
+
             respondProvider.RespondWith(responseBuilder);
 
             return new ResponseMessage { Body = "Mapping added" };
@@ -304,6 +307,7 @@ namespace WireMock.Server
             return new MappingModel
             {
                 Guid = mapping.Guid,
+                Priority = mapping.Priority,
                 Request = new RequestModel
                 {
                     Path = new PathModel
diff --git a/src/WireMock.Net/Server/FluentMockServer.cs b/src/WireMock.Net/Server/FluentMockServer.cs
index 2fe4b0db..9b6a2743 100644
--- a/src/WireMock.Net/Server/FluentMockServer.cs
+++ b/src/WireMock.Net/Server/FluentMockServer.cs
@@ -265,8 +265,8 @@ namespace WireMock.Server
         /// The given.
         /// </summary>
         /// <param name="requestMatcher">The request matcher.</param>
-        /// <returns>The <see cref="IRespondWithAProviderGuid"/>.</returns>
-        public IRespondWithAProviderGuid Given(IRequestMatcher requestMatcher)
+        /// <returns>The <see cref="IRespondWithAProvider"/>.</returns>
+        public IRespondWithAProvider Given(IRequestMatcher requestMatcher)
         {
             return new RespondWithAProvider(RegisterMapping, requestMatcher);
         }
@@ -306,9 +306,12 @@ namespace WireMock.Server
         /// <param name="ctx">The HttpListenerContext.</param>
         private async void HandleRequestAsync(HttpListenerContext ctx)
         {
-            lock (_syncRoot)
+            if (_requestProcessingDelay > TimeSpan.Zero)
             {
-                Task.Delay(_requestProcessingDelay).Wait();
+                lock (_syncRoot)
+                {
+                    Task.Delay(_requestProcessingDelay).Wait();
+                }
             }
 
             var request = _requestMapper.Map(ctx.Request);
@@ -317,7 +320,10 @@ namespace WireMock.Server
 
             try
             {
-                var targetMapping = _mappings.FirstOrDefault(route => route.IsRequestHandled(request));
+                var targetMapping = _mappings
+                    .OrderBy(m => m.Priority)
+                    .FirstOrDefault(m => m.IsRequestHandled(request));
+
                 if (targetMapping == null)
                 {
                     response = new ResponseMessage
diff --git a/src/WireMock.Net/Server/IRespondWithAProvider.cs b/src/WireMock.Net/Server/IRespondWithAProvider.cs
index 51439006..b590ae31 100644
--- a/src/WireMock.Net/Server/IRespondWithAProvider.cs
+++ b/src/WireMock.Net/Server/IRespondWithAProvider.cs
@@ -1,10 +1,26 @@
-namespace WireMock.Server
+using System;
+
+namespace WireMock.Server
 {
     /// <summary>
     /// IRespondWithAProvider
     /// </summary>
     public interface IRespondWithAProvider
     {
+        /// <summary>
+        /// Define a unique identifier for this mapping.
+        /// </summary>
+        /// <param name="guid">The unique identifier.</param>
+        /// <returns>The <see cref="IRespondWithAProvider"/>.</returns>
+        IRespondWithAProvider WithGuid(Guid guid);
+
+        /// <summary>
+        /// Define the priority for this mapping.
+        /// </summary>
+        /// <param name="priority">The priority.</param>
+        /// <returns>The <see cref="IRespondWithAProvider"/>.</returns>
+        IRespondWithAProvider AtPriority(int priority);
+
         /// <summary>
         /// The respond with.
         /// </summary>
diff --git a/src/WireMock.Net/Server/IRespondWithAProviderGuid.cs b/src/WireMock.Net/Server/IRespondWithAProviderGuid.cs
deleted file mode 100644
index b3ba38e0..00000000
--- a/src/WireMock.Net/Server/IRespondWithAProviderGuid.cs
+++ /dev/null
@@ -1,17 +0,0 @@
-using System;
-
-namespace WireMock.Server
-{
-    /// <summary>
-    /// IRespondWithAProviderGuid
-    /// </summary>
-    public interface IRespondWithAProviderGuid : IRespondWithAProvider
-    {
-        /// <summary>
-        /// Define a unique identifier for this mapping.
-        /// </summary>
-        /// <param name="guid">The unique identifier.</param>
-        /// <returns>The <see cref="IRespondWithAProviderGuid"/>.</returns>
-        IRespondWithAProviderGuid WithGuid(Guid guid);
-    }
-}
\ No newline at end of file
diff --git a/src/WireMock.Net/Server/RespondWithAProvider.cs b/src/WireMock.Net/Server/RespondWithAProvider.cs
index d99b4657..9cd7481c 100644
--- a/src/WireMock.Net/Server/RespondWithAProvider.cs
+++ b/src/WireMock.Net/Server/RespondWithAProvider.cs
@@ -6,8 +6,9 @@ namespace WireMock.Server
     /// <summary>
     /// The respond with a provider.
     /// </summary>
-    internal class RespondWithAProvider : IRespondWithAProviderGuid
+    internal class RespondWithAProvider : IRespondWithAProvider
     {
+        private int _priority;
         private Guid? _guid;
 
         /// <summary>
@@ -40,19 +41,31 @@ namespace WireMock.Server
         public void RespondWith(IResponseProvider provider)
         {
             var mappingGuid = _guid ?? Guid.NewGuid();
-            _registrationCallback(new Mapping(mappingGuid, _requestMatcher, provider));
+            _registrationCallback(new Mapping(mappingGuid, _requestMatcher, provider, _priority));
         }
 
         /// <summary>
         /// Define a unique identifier for this mapping.
         /// </summary>
         /// <param name="guid">The unique identifier.</param>
-        /// <returns>The <see cref="IRespondWithAProviderGuid"/>.</returns>
-        public IRespondWithAProviderGuid WithGuid(Guid guid)
+        /// <returns>The <see cref="IRespondWithAProvider"/>.</returns>
+        public IRespondWithAProvider WithGuid(Guid guid)
         {
             _guid = guid;
 
             return this;
         }
+
+        /// <summary>
+        /// Define the priority for this mapping.
+        /// </summary>
+        /// <param name="priority">The priority.</param>
+        /// <returns>The <see cref="IRespondWithAProvider"/>.</returns>
+        public IRespondWithAProvider AtPriority(int priority)
+        {
+            _priority = priority;
+
+            return this;
+        }
     }
 }
\ No newline at end of file
diff --git a/test/WireMock.Net.Tests/FluentMockServerTests.cs b/test/WireMock.Net.Tests/FluentMockServerTests.cs
index f6b2e0b6..16f1363a 100644
--- a/test/WireMock.Net.Tests/FluentMockServerTests.cs
+++ b/test/WireMock.Net.Tests/FluentMockServerTests.cs
@@ -64,6 +64,32 @@ namespace WireMock.Net.Tests
             Check.That(mappings.First().Guid).Equals(guid);
         }
 
+        [Test]
+        public async Task FluentMockServer_Admin_Mappings_AtPriority()
+        {
+            _server = FluentMockServer.Start();
+
+            // given
+            _server.Given(Request.Create().WithPath("/1").UsingGet())
+                .AtPriority(2)
+                .RespondWith(Response.Create().WithStatusCode(200));
+
+            _server.Given(Request.Create().WithPath("/1").UsingGet())
+                .AtPriority(1)
+                .RespondWith(Response.Create().WithStatusCode(400));
+
+            var mappings = _server.Mappings.ToArray();
+            Check.That(mappings).HasSize(2);
+            Check.That(mappings[0].Priority).Equals(2);
+            Check.That(mappings[1].Priority).Equals(1);
+
+            // when
+            var response = await new HttpClient().GetAsync("http://localhost:" + _server.Ports[0] + "/1");
+
+            // then
+            Check.That((int)response.StatusCode).IsEqualTo(400);
+        }
+
         [Test]
         public async Task FluentMockServer_Admin_Requests_Get()
         {