diff --git a/CHANGELOG.md b/CHANGELOG.md
index a7adb0efdc2..1f8230c7184 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -47,6 +47,8 @@ release.
 
 - Prohibit usage of retired names in semantic conventions.
   ([#2191](https://github.com/open-telemetry/opentelemetry-specification/pull/2191))
+- Add `device.manufacturer` to describe mobile device manufacturers.
+  ([2100](https://github.com/open-telemetry/opentelemetry-specification/pull/2100))
 
 ### Compatibility
 
diff --git a/semantic_conventions/resource/device.yaml b/semantic_conventions/resource/device.yaml
index 6035a4b2da9..05238c9a844 100644
--- a/semantic_conventions/resource/device.yaml
+++ b/semantic_conventions/resource/device.yaml
@@ -32,3 +32,9 @@ groups:
           It's recommended this value represents a human readable version of the
           device model rather than a machine readable alternative.
         examples: ['iPhone 6s Plus', 'Samsung Galaxy S6']
+      - id: manufacturer
+        type: string
+        brief: 'The name of the device manufacturer'
+        note: >
+          The Android OS provides this field via [Build](https://developer.android.com/reference/android/os/Build#MANUFACTURER). iOS apps SHOULD hardcode the value `Apple`.
+        examples: ['Apple', 'Samsung']
diff --git a/specification/resource/semantic_conventions/device.md b/specification/resource/semantic_conventions/device.md
index c0f936959b6..26fe7fb5cd0 100644
--- a/specification/resource/semantic_conventions/device.md
+++ b/specification/resource/semantic_conventions/device.md
@@ -12,10 +12,13 @@
 | `device.id` | string | A unique identifier representing the device [1] | `2ab2916d-a51f-4ac8-80ee-45ac31a28092` | No |
 | `device.model.identifier` | string | The model identifier for the device [2] | `iPhone3,4`; `SM-G920F` | No |
 | `device.model.name` | string | The marketing name for the device model [3] | `iPhone 6s Plus`; `Samsung Galaxy S6` | No |
+| `device.manufacturer` | string | The name of the device manufacturer [4] | `Apple`; `Samsung` | No |
 
 **[1]:** The device identifier MUST only be defined using the values outlined below. This value is not an advertising identifier and MUST NOT be used as such. On iOS (Swift or Objective-C), this value MUST be equal to the [vendor identifier](https://developer.apple.com/documentation/uikit/uidevice/1620059-identifierforvendor). On Android (Java or Kotlin), this value MUST be equal to the Firebase Installation ID or a globally unique UUID which is persisted across sessions in your application. More information can be found [here](https://developer.android.com/training/articles/user-data-ids) on best practices and exact implementation details. Caution should be taken when storing personal data or anything which can identify a user. GDPR and data protection laws may apply, ensure you do your own due diligence.
 
 **[2]:** It's recommended this value represents a machine readable version of the model identifier rather than the market or consumer-friendly name of the device.
 
 **[3]:** It's recommended this value represents a human readable version of the device model rather than a machine readable alternative.
-<!-- endsemconv -->
\ No newline at end of file
+
+**[4]:** The Android OS provides this field via [Build](https://developer.android.com/reference/android/os/Build#MANUFACTURER). iOS apps SHOULD hardcode the value `Apple`.
+<!-- endsemconv -->