diff --git a/experimental/CHANGELOG.md b/experimental/CHANGELOG.md
index 8a9d9a53810..4135754501f 100644
--- a/experimental/CHANGELOG.md
+++ b/experimental/CHANGELOG.md
@@ -17,6 +17,9 @@ All notable changes to experimental packages in this project will be documented
 ### :bug: (Bug Fix)
 
 * fix(exporter-prometheus): avoid invoking callback synchronously [#4431](https://github.com/open-telemetry/opentelemetry-js/pull/4431) @legendecas
+* fix(exporter-logs-otlp-grpc): set User-Agent header [#4398](https://github.com/open-telemetry/opentelemetry-js/pull/4398) @Vunovati
+* fix(exporter-logs-otlp-http): set User-Agent header [#4398](https://github.com/open-telemetry/opentelemetry-js/pull/4398) @Vunovati
+* fix(exporter-logs-otlp-proto): set User-Agent header [#4398](https://github.com/open-telemetry/opentelemetry-js/pull/4398) @Vunovati
 
 ### :books: (Refine Doc)
 
diff --git a/experimental/packages/exporter-logs-otlp-grpc/src/OTLPLogExporter.ts b/experimental/packages/exporter-logs-otlp-grpc/src/OTLPLogExporter.ts
index 675ce83db0a..19b747fca72 100644
--- a/experimental/packages/exporter-logs-otlp-grpc/src/OTLPLogExporter.ts
+++ b/experimental/packages/exporter-logs-otlp-grpc/src/OTLPLogExporter.ts
@@ -28,6 +28,11 @@ import {
   createExportLogsServiceRequest,
   IExportLogsServiceRequest,
 } from '@opentelemetry/otlp-transformer';
+import { VERSION } from './version';
+
+const USER_AGENT = {
+  'User-Agent': `OTel-OTLP-Exporter-JavaScript/${VERSION}`,
+};
 
 /**
  * OTLP Logs Exporter for Node
@@ -38,9 +43,12 @@ export class OTLPLogExporter
 {
   constructor(config: OTLPGRPCExporterConfigNode = {}) {
     super(config);
-    const headers = baggageUtils.parseKeyPairsIntoRecord(
-      getEnv().OTEL_EXPORTER_OTLP_LOGS_HEADERS
-    );
+    const headers = {
+      ...USER_AGENT,
+      ...baggageUtils.parseKeyPairsIntoRecord(
+        getEnv().OTEL_EXPORTER_OTLP_LOGS_HEADERS
+      ),
+    };
     this.metadata ||= new Metadata();
     for (const [k, v] of Object.entries(headers)) {
       this.metadata.set(k, v);
diff --git a/experimental/packages/exporter-logs-otlp-grpc/test/OTLPLogExporter.test.ts b/experimental/packages/exporter-logs-otlp-grpc/test/OTLPLogExporter.test.ts
index 9bda910924c..bb57df4a4ea 100644
--- a/experimental/packages/exporter-logs-otlp-grpc/test/OTLPLogExporter.test.ts
+++ b/experimental/packages/exporter-logs-otlp-grpc/test/OTLPLogExporter.test.ts
@@ -37,6 +37,7 @@ import {
   IExportLogsServiceRequest,
   IResourceLogs,
 } from '@opentelemetry/otlp-transformer';
+import { VERSION } from '../src/version';
 
 const logsServiceProtoPath =
   'opentelemetry/proto/collector/logs/v1/logs_service.proto';
@@ -333,6 +334,12 @@ describe('when configuring via environment', () => {
     envSource.OTEL_EXPORTER_OTLP_ENDPOINT = '';
     envSource.OTEL_EXPORTER_OTLP_LOGS_ENDPOINT = '';
   });
+  it('should include user-agent header by default', () => {
+    const collectorExporter = new OTLPLogExporter();
+    assert.deepStrictEqual(collectorExporter.metadata?.get('User-Agent'), [
+      `OTel-OTLP-Exporter-JavaScript/${VERSION}`,
+    ]);
+  });
   it('should use headers defined via env', () => {
     envSource.OTEL_EXPORTER_OTLP_HEADERS = 'foo=bar';
     const collectorExporter = new OTLPLogExporter();
diff --git a/experimental/packages/exporter-logs-otlp-http/src/platform/node/OTLPLogExporter.ts b/experimental/packages/exporter-logs-otlp-http/src/platform/node/OTLPLogExporter.ts
index 56e4bad3d69..9181b082cf9 100644
--- a/experimental/packages/exporter-logs-otlp-http/src/platform/node/OTLPLogExporter.ts
+++ b/experimental/packages/exporter-logs-otlp-http/src/platform/node/OTLPLogExporter.ts
@@ -25,6 +25,11 @@ import { OTLPExporterNodeBase } from '@opentelemetry/otlp-exporter-base';
 import { createExportLogsServiceRequest } from '@opentelemetry/otlp-transformer';
 
 import { getDefaultUrl } from '../config';
+import { VERSION } from '../../version';
+
+const USER_AGENT = {
+  'User-Agent': `OTel-OTLP-Exporter-JavaScript/${VERSION}`,
+};
 
 /**
  * Collector Logs Exporter for Node
@@ -39,13 +44,14 @@ export class OTLPLogExporter
       timeoutMillis: getEnv().OTEL_EXPORTER_OTLP_LOGS_TIMEOUT,
       ...config,
     });
-    this.headers = Object.assign(
-      this.headers,
-      baggageUtils.parseKeyPairsIntoRecord(
+    this.headers = {
+      ...this.headers,
+      ...USER_AGENT,
+      ...baggageUtils.parseKeyPairsIntoRecord(
         getEnv().OTEL_EXPORTER_OTLP_LOGS_HEADERS
       ),
-      config.headers
-    );
+      ...config.headers,
+    };
   }
 
   convert(logRecords: ReadableLogRecord[]): IExportLogsServiceRequest {
diff --git a/experimental/packages/exporter-logs-otlp-http/test/node/OTLPLogExporter.test.ts b/experimental/packages/exporter-logs-otlp-http/test/node/OTLPLogExporter.test.ts
index 83b389628a4..5920657b5b6 100644
--- a/experimental/packages/exporter-logs-otlp-http/test/node/OTLPLogExporter.test.ts
+++ b/experimental/packages/exporter-logs-otlp-http/test/node/OTLPLogExporter.test.ts
@@ -31,6 +31,7 @@ import {
 import { PassThrough, Stream } from 'stream';
 import { IExportLogsServiceRequest } from '@opentelemetry/otlp-transformer';
 import { ExportResultCode } from '@opentelemetry/core';
+import { VERSION } from '../../src/version';
 
 let fakeRequest: PassThrough;
 
@@ -79,6 +80,14 @@ describe('OTLPLogExporter', () => {
       assert.ok(exporter instanceof OTLPLogExporter);
     });
 
+    it('should include user-agent header by default', () => {
+      const exporter = new OTLPLogExporter();
+      assert.strictEqual(
+        exporter.headers['User-Agent'],
+        `OTel-OTLP-Exporter-JavaScript/${VERSION}`
+      );
+    });
+
     it('should use headers defined via env', () => {
       envSource.OTEL_EXPORTER_OTLP_LOGS_HEADERS = 'foo=bar';
       const exporter = new OTLPLogExporter();
diff --git a/experimental/packages/exporter-logs-otlp-proto/src/platform/node/OTLPLogExporter.ts b/experimental/packages/exporter-logs-otlp-proto/src/platform/node/OTLPLogExporter.ts
index a8cdfc4c969..caec7352fff 100644
--- a/experimental/packages/exporter-logs-otlp-proto/src/platform/node/OTLPLogExporter.ts
+++ b/experimental/packages/exporter-logs-otlp-proto/src/platform/node/OTLPLogExporter.ts
@@ -30,6 +30,11 @@ import {
 } from '@opentelemetry/otlp-transformer';
 
 import { ReadableLogRecord, LogRecordExporter } from '@opentelemetry/sdk-logs';
+import { VERSION } from '../../version';
+
+const USER_AGENT = {
+  'User-Agent': `OTel-OTLP-Exporter-JavaScript/${VERSION}`,
+};
 
 const DEFAULT_COLLECTOR_RESOURCE_PATH = 'v1/logs';
 const DEFAULT_COLLECTOR_URL = `http://localhost:4318/${DEFAULT_COLLECTOR_RESOURCE_PATH}`;
@@ -46,13 +51,14 @@ export class OTLPLogExporter
 {
   constructor(config: OTLPExporterConfigBase = {}) {
     super(config);
-    this.headers = Object.assign(
-      this.headers,
-      baggageUtils.parseKeyPairsIntoRecord(
+    this.headers = {
+      ...this.headers,
+      ...USER_AGENT,
+      ...baggageUtils.parseKeyPairsIntoRecord(
         getEnv().OTEL_EXPORTER_OTLP_LOGS_HEADERS
       ),
-      config.headers
-    );
+      ...config.headers,
+    };
   }
   convert(logs: ReadableLogRecord[]): IExportLogsServiceRequest {
     return createExportLogsServiceRequest(logs);
diff --git a/experimental/packages/exporter-logs-otlp-proto/test/node/OTLPLogExporter.test.ts b/experimental/packages/exporter-logs-otlp-proto/test/node/OTLPLogExporter.test.ts
index ab918c992b6..9778c950464 100644
--- a/experimental/packages/exporter-logs-otlp-proto/test/node/OTLPLogExporter.test.ts
+++ b/experimental/packages/exporter-logs-otlp-proto/test/node/OTLPLogExporter.test.ts
@@ -39,6 +39,7 @@ import {
 } from '@opentelemetry/otlp-proto-exporter-base';
 import { IExportLogsServiceRequest } from '@opentelemetry/otlp-transformer';
 import { ReadableLogRecord } from '@opentelemetry/sdk-logs';
+import { VERSION } from '../../src/version';
 
 let fakeRequest: PassThrough;
 
@@ -137,6 +138,13 @@ describe('OTLPLogExporter - node with proto over http', () => {
       );
       envSource.OTEL_EXPORTER_OTLP_LOGS_ENDPOINT = '';
     });
+    it('should include user-agent header by default', () => {
+      const exporter = new OTLPLogExporter();
+      assert.strictEqual(
+        exporter.headers['User-Agent'],
+        `OTel-OTLP-Exporter-JavaScript/${VERSION}`
+      );
+    });
     it('should use headers defined via env', () => {
       envSource.OTEL_EXPORTER_OTLP_LOGS_HEADERS = 'foo=bar';
       const collectorExporter = new OTLPLogExporter();