diff --git a/docs/mrtk3-overview/api-reference.md b/docs/mrtk3-overview/api-reference.md
index 890fdba04..4357facd6 100644
--- a/docs/mrtk3-overview/api-reference.md
+++ b/docs/mrtk3-overview/api-reference.md
@@ -10,7 +10,7 @@ MRTK3 is now shipping as [a set of individually versioned packages](index.md#ver
 - [MRTK Core Definitions](https://aka.ms/mrtk3coreapi)
 - [MRTK Accessibility](https://aka.ms/mrtk3accessibilityapi)
 - [MRTK Audio Effects](https://aka.ms/mrtk3audioapi)
-- [MRTK Data Binding and Theming](https://aka.ms/mrtk3dataapi)
+- [MRTK Data Binding and Theming (Deprecated)](https://aka.ms/mrtk3dataapi)
 - [MRTK Diagnostics](https://aka.ms/mrtk3diagnosticsapi)
 - [MRTK Graphics Tools](https://learn.microsoft.com/dotnet/api/Microsoft.MixedReality.GraphicsTools)
 - [MRTK Input](https://aka.ms/mrtk3inputapi)
diff --git a/docs/mrtk3-overview/packages/packages-overview.md b/docs/mrtk3-overview/packages/packages-overview.md
index b1e0021b0..1aa48980f 100644
--- a/docs/mrtk3-overview/packages/packages-overview.md
+++ b/docs/mrtk3-overview/packages/packages-overview.md
@@ -22,7 +22,7 @@ The following table describes the Mixed Reality Toolkit package dependencies.
 | MRTK Core Definitions |  org.mixedrealitytoolkit.core | Shared definitions, utilities and components. | com.unity.xr.interaction.toolkit <br> com.unity.xr.management | |
 | MRTK Accessibility | org.mixedrealitytoolkit.accessibility | Definitions, features and subsystem for building accessible mixed reality experiences. | org.mixedrealitytoolkit.core <br> org.mixedrealitytoolkit.graphicstools.unity <br> com.unity.textmeshpro | |
 | MRTK Audio Effects | org.mixedrealitytoolkit.audio | Effects and features that enhance the audio in mixed reality experiences. | org.mixedrealitytoolkit.core | |
-| MRTK Data Binding and Theming | org.mixedrealitytoolkit.data | Support for data binding and UI element theming. | org.mixedrealitytoolkit.core <br> com.unity.nuget.newtonsoft-json <br> com.unity.textmeshpro |  |
+| MRTK Data Binding and Theming (Deprecated) | org.mixedrealitytoolkit.data | Support for data binding and UI element theming. Deprecated in favor of the theming system in org.mixedrealitytoolkit.uxcore. | org.mixedrealitytoolkit.core <br> com.unity.nuget.newtonsoft-json <br> com.unity.textmeshpro |  |
 | MRTK Diagnostics | org.mixedrealitytoolkit.diagnostics | Diagnostics and performance monitoring subsystems and tools. | org.mixedrealitytoolkit.core <br> com.unity.xr.management | |
 | MRTK Environment | org.mixedrealitytoolkit.environment | Environmental features and subsystems, such as Spatial Awareness and boundaries. | org.mixedrealitytoolkit.core <br> com.unity.xr.management |  |
 | MRTK Extended Assets | org.mixedrealitytoolkit.extendedassets | Additional audio, font, texture and other assets for use in applications. | org.mixedrealitytoolkit.standardassets <br> org.mixedrealitytoolkit.graphicstools.unity | |
@@ -49,7 +49,7 @@ In order to place minimal overhead on applications importing the Mixed Reality T
 | ------------ | ------------ | ----------------- |
 | MRTK Core Definitions | org.mixedrealitytoolkit.core  | |
 | MRTK Accessibility | org.mixedrealitytoolkit.accessibility | |
-| MRTK Data Binding and Theming | org.mixedrealitytoolkit.data | |
+| MRTK Data Binding and Theming (Deprecated) | org.mixedrealitytoolkit.data | |
 | MRTK Diagnostics | org.mixedrealitytoolkit.diagnostics | |
 | MRTK Environment | org.mixedrealitytoolkit.environment | |
 | MRTK Extended Assets | org.mixedrealitytoolkit.extendedassets | |
diff --git a/org.mixedrealitytoolkit.data/CHANGELOG.md b/org.mixedrealitytoolkit.data/CHANGELOG.md
index 2b354fdb7..d211d2e09 100644
--- a/org.mixedrealitytoolkit.data/CHANGELOG.md
+++ b/org.mixedrealitytoolkit.data/CHANGELOG.md
@@ -2,6 +2,12 @@
 
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.1.0/).
 
+## Unreleased
+
+### Deprecated
+
+* Deprecated this package in favor of the theming system in `org.mixedrealitytoolkit.uxcore`. [PR #1142](https://github.com/MixedRealityToolkit/MixedRealityToolkit-Unity/pull/1142)
+
 ## [1.0.3-development.pre.20] - 2024-04-23
 
 ### Fixed
diff --git a/org.mixedrealitytoolkit.data/README.md b/org.mixedrealitytoolkit.data/README.md
index 5d1c3ccb6..8f88e9226 100644
--- a/org.mixedrealitytoolkit.data/README.md
+++ b/org.mixedrealitytoolkit.data/README.md
@@ -1,3 +1,4 @@
-# MRTK Data Binding and Theming
+# MRTK Data Binding and Theming (Deprecated)
 
-Data binding and theming features contained within this package are experimental and are not recommended for use in production applications and may be changed or removed.
+> [!WARNING]
+> This package has been deprecated and is no longer actively maintained. For theming and data binding, please use the theming system in [`org.mixedrealitytoolkit.uxcore`](../org.mixedrealitytoolkit.uxcore).
diff --git a/org.mixedrealitytoolkit.data/package.json b/org.mixedrealitytoolkit.data/package.json
index 515ca25be..e02c590b5 100644
--- a/org.mixedrealitytoolkit.data/package.json
+++ b/org.mixedrealitytoolkit.data/package.json
@@ -1,8 +1,8 @@
 {
   "name": "org.mixedrealitytoolkit.data",
-  "version": "1.0.3-development.pre.20",
-  "description": "Data binding and theming features contained within this package are experimental and are not recommended for use in production applications and may be changed or removed.",
-  "displayName": "MRTK3 Data Binding and Theming (Experimental)",
+  "version": "1.0.4-development.pre.0",
+  "description": "This package is deprecated. Please use the theming and data binding features in org.mixedrealitytoolkit.uxcore.",
+  "displayName": "MRTK3 Data Binding and Theming (Deprecated)",
   "msftFeatureCategory": "Experimental",
   "author": "Mixed Reality Toolkit Contributors",
   "license": "BSD 3-Clause",