diff --git a/src/WebJobs.Script/Diagnostics/OpenTelemetry/OpenTelemetryConfigurationExtensions.cs b/src/WebJobs.Script/Diagnostics/OpenTelemetry/OpenTelemetryConfigurationExtensions.cs
index e3590551b8..dd073c9ee6 100644
--- a/src/WebJobs.Script/Diagnostics/OpenTelemetry/OpenTelemetryConfigurationExtensions.cs
+++ b/src/WebJobs.Script/Diagnostics/OpenTelemetry/OpenTelemetryConfigurationExtensions.cs
@@ -180,6 +180,7 @@ private static IOpenTelemetryBuilder ConfigureTracing(this IOpenTelemetryBuilder
                 ReadOnlySpan<string> sources =
                 [
                     OpenTelemetryConstants.ActivitySourceNames.ServiceBusProcessor,
+                    OpenTelemetryConstants.ActivitySourceNames.ServiceBusSessionProcessor,
                     OpenTelemetryConstants.ActivitySourceNames.EventHubsProcessor,
                     OpenTelemetryConstants.ActivitySourceNames.Mcp,
                     OpenTelemetryConstants.ActivitySourceNames.WebJobsExtensions,
diff --git a/src/WebJobs.Script/Diagnostics/OpenTelemetry/OpenTelemetryConstants.cs b/src/WebJobs.Script/Diagnostics/OpenTelemetry/OpenTelemetryConstants.cs
index af87b1d144..473b96002c 100644
--- a/src/WebJobs.Script/Diagnostics/OpenTelemetry/OpenTelemetryConstants.cs
+++ b/src/WebJobs.Script/Diagnostics/OpenTelemetry/OpenTelemetryConstants.cs
@@ -19,6 +19,7 @@ internal static class ActivitySourceNames
             internal const string WebJobs = "Microsoft.Azure.WebJobs";
             internal const string Host = "Microsoft.Azure.Functions.Host";
             internal const string ServiceBusProcessor = "Azure.Messaging.ServiceBus.ServiceBusProcessor";
+            internal const string ServiceBusSessionProcessor = "Azure.Messaging.ServiceBus.ServiceBusSessionProcessor";
             internal const string EventHubsProcessor = "Azure.Messaging.EventHubs.EventProcessor";
             internal const string Mcp = "Azure.Functions.Extensions.Mcp";
             internal const string WebJobsExtensions = "Microsoft.Azure.WebJobs.Extensions.*";
diff --git a/test/WebJobs.Script.Tests/Diagnostics/OpenTelemetry/OpenTelemetryConfigurationExtensionsTests.cs b/test/WebJobs.Script.Tests/Diagnostics/OpenTelemetry/OpenTelemetryConfigurationExtensionsTests.cs
index dcb7340a03..6b84693c3a 100644
--- a/test/WebJobs.Script.Tests/Diagnostics/OpenTelemetry/OpenTelemetryConfigurationExtensionsTests.cs
+++ b/test/WebJobs.Script.Tests/Diagnostics/OpenTelemetry/OpenTelemetryConfigurationExtensionsTests.cs
@@ -266,6 +266,28 @@ public void OpenTelemetryBuilder_InPlaceholderMode()
             Assert.True(openTelemetryLoggerOptions.Value.IncludeFormattedMessage);
         }
 
+        [Fact]
+        public void OpenTelemetryBuilder_ListensToServiceBusSessionProcessor()
+        {
+            using IHost host = new HostBuilder()
+                .ConfigureLogging((context, builder) =>
+                {
+                    builder.ConfigureOpenTelemetry(context, TelemetryMode.Placeholder);
+                })
+                .ConfigureServices(s =>
+                {
+                    s.AddSingleton<IEnvironment>(SystemEnvironment.Instance);
+                })
+                .Build();
+
+            host.Services.GetRequiredService<TracerProvider>();
+
+            using var source = new ActivitySource(OpenTelemetryConstants.ActivitySourceNames.ServiceBusSessionProcessor);
+            using var activity = source.StartActivity("ServiceBusSessionProcessor.ProcessSessionMessage");
+
+            Assert.NotNull(activity);
+        }
+
         [Fact]
         public void OpenTelemetryBuilder_NotInPlaceholderMode()
         {