diff --git a/dotnet/src/webdriver/Chrome/ChromeDriver.cs b/dotnet/src/webdriver/Chrome/ChromeDriver.cs
index 9f9e96c2c3948..8beea124c455e 100644
--- a/dotnet/src/webdriver/Chrome/ChromeDriver.cs
+++ b/dotnet/src/webdriver/Chrome/ChromeDriver.cs
@@ -139,6 +139,11 @@ public ChromeDriver(ChromeDriverService service, ChromeOptions options, TimeSpan
             : base(service, options, commandTimeout)
         {
             this.AddCustomChromeCommand(ExecuteCdp, HttpCommandInfo.PostCommand, "/session/{sessionId}/goog/cdp/execute");
+            this.AddCustomChromeCommand(GetCastSinksCommand, HttpCommandInfo.GetCommand, "/session/{sessionId}/goog/cast/get_sinks");
+            this.AddCustomChromeCommand(SelectCastSinkCommand, HttpCommandInfo.PostCommand, "/session/{sessionId}/goog/cast/set_sink_to_use");
+            this.AddCustomChromeCommand(StartCastTabMirroringCommand, HttpCommandInfo.PostCommand, "/session/{sessionId}/goog/cast/start_tab_mirroring");
+            this.AddCustomChromeCommand(GetCastIssueMessageCommand, HttpCommandInfo.GetCommand, "/session/{sessionId}/goog/cast/get_issue_message");
+            this.AddCustomChromeCommand(StopCastingCommand, HttpCommandInfo.PostCommand, "/session/{sessionId}/goog/cast/stop_casting");
         }
 
     }
diff --git a/dotnet/src/webdriver/Chromium/ChromiumDriver.cs b/dotnet/src/webdriver/Chromium/ChromiumDriver.cs
index 957bc94dcfe47..de483cb492f57 100644
--- a/dotnet/src/webdriver/Chromium/ChromiumDriver.cs
+++ b/dotnet/src/webdriver/Chromium/ChromiumDriver.cs
@@ -38,12 +38,17 @@ public abstract class ChromiumDriver : WebDriver, ISupportsLogs, IDevTools
         /// </summary>
         public static readonly bool AcceptUntrustedCertificates = true;
 
+        protected const string ExecuteCdp = "executeCdpCommand";
+        protected const string GetCastSinksCommand = "getCastSinks";
+        protected const string SelectCastSinkCommand = "selectCastSink";
+        protected const string StartCastTabMirroringCommand = "startCastTabMirroring";
+        protected const string GetCastIssueMessageCommand = "getCastIssueMessage";
+        protected const string StopCastingCommand = "stopCasting";
         private const string GetNetworkConditionsCommand = "getNetworkConditions";
         private const string SetNetworkConditionsCommand = "setNetworkConditions";
         private const string DeleteNetworkConditionsCommand = "deleteNetworkConditions";
         private const string SendChromeCommand = "sendChromeCommand";
         private const string SendChromeCommandWithResult = "sendChromeCommandWithResult";
-        protected const string ExecuteCdp = "executeCdpCommand";
 
         private readonly string optionsCapabilityName;
         private DevToolsSession devToolsSession;
@@ -234,6 +239,74 @@ public void CloseDevToolsSession()
             }
         }
 
+        /// <summary>
+        /// Returns the list of cast sinks (Cast devices) available to the Chrome media router.
+        /// </summary>
+        /// <returns>An object representing the list of available sinks.</returns>
+        public object GetCastSinks()
+        {
+            Response response = this.Execute(GetCastSinksCommand, null);
+            return response.Value;
+        }
+
+        /// <summary>
+        /// Selects a cast sink (Cast device) as the recipient of media router intents (connect or play).
+        /// </summary>
+        /// <param name="deviceName">Name of the target sink (device).</param>
+        public void SelectCastSink(string deviceName)
+        {
+            if (deviceName == null)
+            {
+                throw new ArgumentNullException("deviceName", "deviceName must not be null");
+            }
+
+            Dictionary<string, object> parameters = new Dictionary<string, object>();
+            parameters["sinkName"] = deviceName;
+            this.Execute(SelectCastSinkCommand, parameters);
+        }
+
+        /// <summary>
+        /// Initiates tab mirroring for the current browser tab on the specified device.
+        /// </summary>
+        /// <param name="deviceName">Name of the target sink (device).</param>
+        public void StartTabMirroring(string deviceName)
+        {
+            if (deviceName == null)
+            {
+                throw new ArgumentNullException("deviceName", "deviceName must not be null");
+            }
+
+            Dictionary<string, object> parameters = new Dictionary<string, object>();
+            parameters["sinkName"] = deviceName;
+            this.Execute(StartCastTabMirroringCommand, parameters);
+        }
+
+        /// <summary>
+        /// Returns the error message if there is any issue in a Cast session.
+        /// </summary>
+        /// <returns>An error message.</returns>
+        public String GetCastIssueMessage()
+        {
+            Response response = this.Execute(GetCastIssueMessageCommand, null);
+            return (string)response.Value;
+        }
+
+        /// <summary>
+        /// Stops casting from media router to the specified device, if connected.
+        /// </summary>
+        /// <param name="deviceName">Name of the target sink (device).</param>
+        public void StopCasting(string deviceName)
+        {
+            if (deviceName == null)
+            {
+                throw new ArgumentNullException("deviceName", "deviceName must not be null");
+            }
+
+            Dictionary<string, object> parameters = new Dictionary<string, object>();
+            parameters["sinkName"] = deviceName;
+            this.Execute(StopCastingCommand, parameters);
+        }
+
         protected override void Dispose(bool disposing)
         {
             if (disposing)
diff --git a/dotnet/src/webdriver/Edge/EdgeDriver.cs b/dotnet/src/webdriver/Edge/EdgeDriver.cs
index 4e95fd96bfb01..d2ce25cbc7e19 100644
--- a/dotnet/src/webdriver/Edge/EdgeDriver.cs
+++ b/dotnet/src/webdriver/Edge/EdgeDriver.cs
@@ -107,6 +107,11 @@ public EdgeDriver(EdgeDriverService service, EdgeOptions options, TimeSpan comma
             : base(service, options, commandTimeout)
         {
             this.AddCustomChromeCommand(ExecuteCdp, HttpCommandInfo.PostCommand, "/session/{sessionId}/ms/cdp/execute");
+            this.AddCustomChromeCommand(GetCastSinksCommand, HttpCommandInfo.GetCommand, "/session/{sessionId}/ms/cast/get_sinks");
+            this.AddCustomChromeCommand(SelectCastSinkCommand, HttpCommandInfo.PostCommand, "/session/{sessionId}/ms/cast/set_sink_to_use");
+            this.AddCustomChromeCommand(StartCastTabMirroringCommand, HttpCommandInfo.PostCommand, "/session/{sessionId}/ms/cast/start_tab_mirroring");
+            this.AddCustomChromeCommand(GetCastIssueMessageCommand, HttpCommandInfo.GetCommand, "/session/{sessionId}/ms/cast/get_issue_message");
+            this.AddCustomChromeCommand(StopCastingCommand, HttpCommandInfo.PostCommand, "/session/{sessionId}/ms/cast/stop_casting");
         }
     }
 }