diff --git a/ZB.MOM.WW.SPHistorianClient/Directory.Packages.props b/ZB.MOM.WW.SPHistorianClient/Directory.Packages.props
index ab763ff..ead2913 100644
--- a/ZB.MOM.WW.SPHistorianClient/Directory.Packages.props
+++ b/ZB.MOM.WW.SPHistorianClient/Directory.Packages.props
@@ -20,6 +20,7 @@
     <PackageVersion Include="Microsoft.Extensions.DependencyInjection.Abstractions" Version="10.0.7" />
 
     <!-- Test -->
+    <PackageVersion Include="Microsoft.Extensions.DependencyInjection" Version="10.0.7" />
     <PackageVersion Include="Microsoft.NET.Test.Sdk" Version="17.14.1" />
     <PackageVersion Include="xunit" Version="2.9.3" />
     <PackageVersion Include="xunit.runner.visualstudio" Version="3.1.4" />
diff --git a/ZB.MOM.WW.SPHistorianClient/src/ZB.MOM.WW.SPHistorianClient/DependencyInjection/ZbSpHistorianClientServiceCollectionExtensions.cs b/ZB.MOM.WW.SPHistorianClient/src/ZB.MOM.WW.SPHistorianClient/DependencyInjection/ZbSpHistorianClientServiceCollectionExtensions.cs
new file mode 100644
index 0000000..a8e231d
--- /dev/null
+++ b/ZB.MOM.WW.SPHistorianClient/src/ZB.MOM.WW.SPHistorianClient/DependencyInjection/ZbSpHistorianClientServiceCollectionExtensions.cs
@@ -0,0 +1,31 @@
+using Microsoft.Extensions.DependencyInjection;
+
+namespace ZB.MOM.WW.SPHistorianClient;
+
+/// <summary>
+/// ZB.MOM.WW DI registration for <see cref="HistorianClient"/>. Mirrors the family's
+/// <c>AddZb*</c> convention. Because <see cref="HistorianClientOptions"/> is <c>required</c>/
+/// <c>init</c>-only, callers pass a fully-built options instance (bind it from configuration in the
+/// consuming app, e.g. <c>config.GetSection("Historian").Get&lt;HistorianClientOptions&gt;()</c>).
+/// </summary>
+public static class ZbSpHistorianClientServiceCollectionExtensions
+{
+    public static IServiceCollection AddZbSpHistorianClient(
+        this IServiceCollection services,
+        HistorianClientOptions options)
+    {
+        ArgumentNullException.ThrowIfNull(services);
+        ArgumentNullException.ThrowIfNull(options);
+        if (string.IsNullOrWhiteSpace(options.Host))
+        {
+            throw new ArgumentException(
+                "HistorianClientOptions.Host must be set.", nameof(options));
+        }
+
+        services.AddSingleton(options);
+        // HistorianClient opens a fresh channel per operation and has a no-op DisposeAsync,
+        // so transient is safe and avoids assuming the shared dialect is concurrency-safe.
+        services.AddTransient<HistorianClient>();
+        return services;
+    }
+}
diff --git a/ZB.MOM.WW.SPHistorianClient/tests/ZB.MOM.WW.SPHistorianClient.Tests/DependencyInjectionTests.cs b/ZB.MOM.WW.SPHistorianClient/tests/ZB.MOM.WW.SPHistorianClient.Tests/DependencyInjectionTests.cs
new file mode 100644
index 0000000..1b36707
--- /dev/null
+++ b/ZB.MOM.WW.SPHistorianClient/tests/ZB.MOM.WW.SPHistorianClient.Tests/DependencyInjectionTests.cs
@@ -0,0 +1,38 @@
+using Microsoft.Extensions.DependencyInjection;
+using ZB.MOM.WW.SPHistorianClient;
+
+namespace ZB.MOM.WW.SPHistorianClient.Tests;
+
+public class DependencyInjectionTests
+{
+    [Fact]
+    public async Task AddZbSpHistorianClient_resolves_client_and_options()
+    {
+        var services = new ServiceCollection();
+        var options = new HistorianClientOptions { Host = "localhost" };
+
+        services.AddZbSpHistorianClient(options);
+
+        // HistorianClient is IAsyncDisposable-only, so the container must be disposed
+        // asynchronously (a synchronous `using` throws InvalidOperationException).
+        await using var sp = services.BuildServiceProvider();
+        Assert.Same(options, sp.GetRequiredService<HistorianClientOptions>());
+        Assert.NotNull(sp.GetRequiredService<HistorianClient>());
+    }
+
+    [Fact]
+    public void AddZbSpHistorianClient_throws_when_host_missing()
+    {
+        var services = new ServiceCollection();
+        var options = new HistorianClientOptions { Host = "" };
+
+        Assert.Throws<ArgumentException>(() => services.AddZbSpHistorianClient(options));
+    }
+
+    [Fact]
+    public void AddZbSpHistorianClient_throws_on_null_options()
+    {
+        var services = new ServiceCollection();
+        Assert.Throws<ArgumentNullException>(() => services.AddZbSpHistorianClient(null!));
+    }
+}
diff --git a/ZB.MOM.WW.SPHistorianClient/tests/ZB.MOM.WW.SPHistorianClient.Tests/ZB.MOM.WW.SPHistorianClient.Tests.csproj b/ZB.MOM.WW.SPHistorianClient/tests/ZB.MOM.WW.SPHistorianClient.Tests/ZB.MOM.WW.SPHistorianClient.Tests.csproj
index e593f46..011e716 100644
--- a/ZB.MOM.WW.SPHistorianClient/tests/ZB.MOM.WW.SPHistorianClient.Tests/ZB.MOM.WW.SPHistorianClient.Tests.csproj
+++ b/ZB.MOM.WW.SPHistorianClient/tests/ZB.MOM.WW.SPHistorianClient.Tests/ZB.MOM.WW.SPHistorianClient.Tests.csproj
@@ -6,6 +6,7 @@
 
   <ItemGroup>
     <PackageReference Include="coverlet.collector" />
+    <PackageReference Include="Microsoft.Extensions.DependencyInjection" />
     <PackageReference Include="Microsoft.NET.Test.Sdk" />
     <PackageReference Include="Microsoft.Data.SqlClient" />
     <PackageReference Include="xunit" />