diff --git a/src/WireMock.Net/Http/HttpClientBuilder.cs b/src/WireMock.Net/Http/HttpClientBuilder.cs
index 6e9e6a17..1051b503 100644
--- a/src/WireMock.Net/Http/HttpClientBuilder.cs
+++ b/src/WireMock.Net/Http/HttpClientBuilder.cs
@@ -35,9 +35,14 @@ internal static class HttpClientBuilder
         {
             handler.ClientCertificateOptions = ClientCertificateOption.Manual;
 
-            var x509Certificate2 = CertificateLoader.LoadCertificate(settings.ClientX509Certificate2ThumbprintOrSubjectName);
+            var x509Certificate2 = CertificateLoader.LoadCertificate(settings.ClientX509Certificate2ThumbprintOrSubjectName!);
             handler.ClientCertificates.Add(x509Certificate2);
         }
+        else if (settings.Certificate != null)
+        {
+            handler.ClientCertificateOptions = ClientCertificateOption.Manual;
+            handler.ClientCertificates.Add(settings.Certificate);
+        }
 
         handler.AllowAutoRedirect = settings.AllowAutoRedirect == true;
 
diff --git a/src/WireMock.Net/ResponseBuilders/IProxyResponseBuilder.cs b/src/WireMock.Net/ResponseBuilders/IProxyResponseBuilder.cs
index 0fd6cd85..716cdd0d 100644
--- a/src/WireMock.Net/ResponseBuilders/IProxyResponseBuilder.cs
+++ b/src/WireMock.Net/ResponseBuilders/IProxyResponseBuilder.cs
@@ -1,4 +1,4 @@
-using JetBrains.Annotations;
+using System.Security.Cryptography.X509Certificates;
 using WireMock.Settings;
 
 namespace WireMock.ResponseBuilders;
@@ -17,9 +17,17 @@ public interface IProxyResponseBuilder : IStatusCodeResponseBuilder
     IResponseBuilder WithProxy(string proxyUrl, string? clientX509Certificate2ThumbprintOrSubjectName = null);
 
     /// <summary>
-    /// WithProxy using IProxyAndRecordSettings.
+    /// WithProxy using <see cref="ProxyAndRecordSettings"/>.
     /// </summary>
-    /// <param name="settings">The IProxyAndRecordSettings.</param>
+    /// <param name="settings">The ProxyAndRecordSettings.</param>
     /// <returns>A <see cref="IResponseBuilder"/>.</returns>
-    IResponseBuilder WithProxy([NotNull] ProxyAndRecordSettings settings);
+    IResponseBuilder WithProxy(ProxyAndRecordSettings settings);
+
+    /// <summary>
+    /// WithProxy using <see cref="X509Certificate2"/>.
+    /// </summary>
+    /// <param name="proxyUrl">The proxy url.</param>
+    /// <param name="certificate"">The X509Certificate2.</param>
+    /// <returns>A <see cref="IResponseBuilder"/>.</returns>
+    IResponseBuilder WithProxy(string proxyUrl, X509Certificate2 certificate);
 }
\ No newline at end of file
diff --git a/src/WireMock.Net/ResponseBuilders/Response.WithProxy.cs b/src/WireMock.Net/ResponseBuilders/Response.WithProxy.cs
index 51e0fb62..359745eb 100644
--- a/src/WireMock.Net/ResponseBuilders/Response.WithProxy.cs
+++ b/src/WireMock.Net/ResponseBuilders/Response.WithProxy.cs
@@ -2,6 +2,7 @@ using System.Net.Http;
 using WireMock.Http;
 using WireMock.Settings;
 using Stef.Validation;
+using System.Security.Cryptography.X509Certificates;
 
 namespace WireMock.ResponseBuilders;
 
@@ -38,4 +39,19 @@ public partial class Response
         _httpClientForProxy = HttpClientBuilder.Build(settings);
         return this;
     }
+
+    /// <inheritdoc />
+    public IResponseBuilder WithProxy(string proxyUrl, X509Certificate2 certificate)
+    {
+        Guard.NotNullOrEmpty(proxyUrl);
+        Guard.NotNull(certificate);
+
+        var settings = new ProxyAndRecordSettings
+        {
+            Url = proxyUrl,
+            Certificate = certificate
+        };
+
+        return WithProxy(settings);
+    }
 }
\ No newline at end of file
diff --git a/src/WireMock.Net/Settings/HttpClientSettings.cs b/src/WireMock.Net/Settings/HttpClientSettings.cs
index 42805c1f..95a9d19a 100644
--- a/src/WireMock.Net/Settings/HttpClientSettings.cs
+++ b/src/WireMock.Net/Settings/HttpClientSettings.cs
@@ -1,9 +1,11 @@
+using System.Security.Cryptography.X509Certificates;
+
 namespace WireMock.Settings;
 
 /// <summary>
 /// HttpClientSettings
 /// </summary>
-public class HttpClientSettings
+public abstract class HttpClientSettings
 {
     /// <summary>
     /// The clientCertificate thumbprint or subject name fragment to use.
@@ -20,4 +22,9 @@ public class HttpClientSettings
     /// Proxy requests should follow redirection (30x).
     /// </summary>
     public bool? AllowAutoRedirect { get; set; }
+
+    /// <summary>
+    /// The <see cref="X509Certificate2"/> to use.
+    /// </summary>
+    public X509Certificate2? Certificate { get; set; }
 }
\ No newline at end of file
diff --git a/src/WireMock.Net/Settings/WireMockCertificateSettings.cs b/src/WireMock.Net/Settings/WireMockCertificateSettings.cs
index c7c60eb9..d7ac4707 100644
--- a/src/WireMock.Net/Settings/WireMockCertificateSettings.cs
+++ b/src/WireMock.Net/Settings/WireMockCertificateSettings.cs
@@ -1,54 +1,53 @@
 using JetBrains.Annotations;
 
-namespace WireMock.Settings
+namespace WireMock.Settings;
+
+/// <summary>
+/// If https is used, these settings can be used to configure the CertificateSettings in case a custom certificate instead the default .NET certificate should be used.
+///
+/// X509StoreName and X509StoreLocation should be defined
+/// OR
+/// X509CertificateFilePath and X509CertificatePassword should be defined
+/// </summary>
+public class WireMockCertificateSettings
 {
     /// <summary>
-    /// If https is used, these settings can be used to configure the CertificateSettings in case a custom certificate instead the default .NET certificate should be used.
-    ///
+    /// X509 StoreName (AddressBook, AuthRoot, CertificateAuthority, My, Root, TrustedPeople or TrustedPublisher)
+    /// </summary>
+    [PublicAPI]
+    public string? X509StoreName { get; set; }
+
+    /// <summary>
+    /// X509 StoreLocation (CurrentUser or LocalMachine)
+    /// </summary>
+    [PublicAPI]
+    public string? X509StoreLocation { get; set; }
+
+    /// <summary>
+    /// X509 Thumbprint or SubjectName (if not defined, the 'host' is used)
+    /// </summary>
+    [PublicAPI]
+    public string? X509StoreThumbprintOrSubjectName { get; set; }
+
+    /// <summary>
+    /// X509Certificate FilePath
+    /// </summary>
+    [PublicAPI]
+    public string? X509CertificateFilePath { get; set; }
+
+    /// <summary>
+    /// X509Certificate Password
+    /// </summary>
+    [PublicAPI]
+    public string? X509CertificatePassword { get; set; }
+
+    /// <summary>
     /// X509StoreName and X509StoreLocation should be defined
     /// OR
     /// X509CertificateFilePath and X509CertificatePassword should be defined
     /// </summary>
-    public class WireMockCertificateSettings
-    {
-        /// <summary>
-        /// X509 StoreName (AddressBook, AuthRoot, CertificateAuthority, My, Root, TrustedPeople or TrustedPublisher)
-        /// </summary>
-        [PublicAPI]
-        public string? X509StoreName { get; set; }
-
-        /// <summary>
-        /// X509 StoreLocation (CurrentUser or LocalMachine)
-        /// </summary>
-        [PublicAPI]
-        public string? X509StoreLocation { get; set; }
-
-        /// <summary>
-        /// X509 Thumbprint or SubjectName (if not defined, the 'host' is used)
-        /// </summary>
-        [PublicAPI]
-        public string? X509StoreThumbprintOrSubjectName { get; set; }
-
-        /// <summary>
-        /// X509Certificate FilePath
-        /// </summary>
-        [PublicAPI]
-        public string? X509CertificateFilePath { get; set; }
-
-        /// <summary>
-        /// X509Certificate Password
-        /// </summary>
-        [PublicAPI]
-        public string? X509CertificatePassword { get; set; }
-
-        /// <summary>
-        /// X509StoreName and X509StoreLocation should be defined
-        /// OR
-        /// X509CertificateFilePath and X509CertificatePassword should be defined
-        /// </summary>
-        [PublicAPI]
-        public bool IsDefined =>
-            !string.IsNullOrEmpty(X509StoreName) && !string.IsNullOrEmpty(X509StoreLocation) ||
-            !string.IsNullOrEmpty(X509CertificateFilePath);
-    }
+    [PublicAPI]
+    public bool IsDefined =>
+        !string.IsNullOrEmpty(X509StoreName) && !string.IsNullOrEmpty(X509StoreLocation) ||
+        !string.IsNullOrEmpty(X509CertificateFilePath);
 }
\ No newline at end of file
diff --git a/test/WireMock.Net.Tests/WireMockServer.Proxy.cs b/test/WireMock.Net.Tests/WireMockServer.Proxy.cs
index 667d3ab6..ab43ed1b 100644
--- a/test/WireMock.Net.Tests/WireMockServer.Proxy.cs
+++ b/test/WireMock.Net.Tests/WireMockServer.Proxy.cs
@@ -1,6 +1,3 @@
-using FluentAssertions;
-using Moq;
-using NFluent;
 using System;
 using System.Linq;
 using System.Net;
@@ -8,6 +5,9 @@ using System.Net.Http;
 using System.Net.Http.Headers;
 using System.Text;
 using System.Threading.Tasks;
+using FluentAssertions;
+using Moq;
+using NFluent;
 using WireMock.Constants;
 using WireMock.Handlers;
 using WireMock.Matchers;
@@ -144,9 +144,11 @@ public class WireMockServerProxyTests
         };
 
         var server = WireMockServer.Start(settings);
-        server.Given(Request.Create()
+        server
+            .Given(Request.Create()
                 .WithPath("/*")
-                .WithBody(new RegexMatcher(stringBody)))
+                .WithBody(new RegexMatcher(stringBody))
+            )
             .WithTitle(title)
             .WithDescription(description)
             .AtPriority(WireMockConstants.ProxyPriority)