diff --git a/CHANGELOG.md b/CHANGELOG.md
index 4541f191293..6bb6b0c7016 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -12,7 +12,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
   ([3124](https://github.com/open-telemetry/opentelemetry-python/pull/3124))
 - Add db metric name to semantic conventions
   ([#3115](https://github.com/open-telemetry/opentelemetry-python/pull/3115))
-
+- Fix User-Agent header value for OTLP exporters to conform to RFC7231 & RFC7230
+  ([#3128](https://github.com/open-telemetry/opentelemetry-python/pull/3128))
 - Fix validation of baggage values
   ([#3058](https://github.com/open-telemetry/opentelemetry-python/pull/3058))
 
diff --git a/exporter/opentelemetry-exporter-otlp-proto-grpc/src/opentelemetry/exporter/otlp/proto/grpc/__init__.py b/exporter/opentelemetry-exporter-otlp-proto-grpc/src/opentelemetry/exporter/otlp/proto/grpc/__init__.py
index 60af18de2e6..07553d69d03 100644
--- a/exporter/opentelemetry-exporter-otlp-proto-grpc/src/opentelemetry/exporter/otlp/proto/grpc/__init__.py
+++ b/exporter/opentelemetry-exporter-otlp-proto-grpc/src/opentelemetry/exporter/otlp/proto/grpc/__init__.py
@@ -71,5 +71,5 @@
 """
 from .version import __version__
 
-_USER_AGENT_HEADER_VALUE = "OTel OTLP Exporter Python/" + __version__
+_USER_AGENT_HEADER_VALUE = "OTel-OTLP-Exporter-Python/" + __version__
 _OTLP_GRPC_HEADERS = [("user-agent", _USER_AGENT_HEADER_VALUE)]
diff --git a/exporter/opentelemetry-exporter-otlp-proto-grpc/tests/logs/test_otlp_logs_exporter.py b/exporter/opentelemetry-exporter-otlp-proto-grpc/tests/logs/test_otlp_logs_exporter.py
index c7996b9bf9e..f21ed06678a 100644
--- a/exporter/opentelemetry-exporter-otlp-proto-grpc/tests/logs/test_otlp_logs_exporter.py
+++ b/exporter/opentelemetry-exporter-otlp-proto-grpc/tests/logs/test_otlp_logs_exporter.py
@@ -289,7 +289,7 @@ def test_otlp_headers_from_env(self):
         # pylint: disable=protected-access
         self.assertEqual(
             self.exporter._headers,
-            (("user-agent", "OTel OTLP Exporter Python/" + __version__),),
+            (("user-agent", "OTel-OTLP-Exporter-Python/" + __version__),),
         )
 
     @patch("opentelemetry.exporter.otlp.proto.grpc.exporter._expo")
diff --git a/exporter/opentelemetry-exporter-otlp-proto-grpc/tests/test_otlp_metrics_exporter.py b/exporter/opentelemetry-exporter-otlp-proto-grpc/tests/test_otlp_metrics_exporter.py
index 6436661a985..31bb878a5f9 100644
--- a/exporter/opentelemetry-exporter-otlp-proto-grpc/tests/test_otlp_metrics_exporter.py
+++ b/exporter/opentelemetry-exporter-otlp-proto-grpc/tests/test_otlp_metrics_exporter.py
@@ -418,7 +418,7 @@ def test_otlp_headers_from_env(self, mock_ssl_channel, mock_secure):
             (
                 ("key1", "value1"),
                 ("key2", "VALUE=2"),
-                ("user-agent", "OTel OTLP Exporter Python/" + __version__),
+                ("user-agent", "OTel-OTLP-Exporter-Python/" + __version__),
             ),
         )
         exporter = OTLPMetricExporter(
@@ -430,7 +430,7 @@ def test_otlp_headers_from_env(self, mock_ssl_channel, mock_secure):
             (
                 ("key3", "value3"),
                 ("key4", "value4"),
-                ("user-agent", "OTel OTLP Exporter Python/" + __version__),
+                ("user-agent", "OTel-OTLP-Exporter-Python/" + __version__),
             ),
         )
 
diff --git a/exporter/opentelemetry-exporter-otlp-proto-grpc/tests/test_otlp_trace_exporter.py b/exporter/opentelemetry-exporter-otlp-proto-grpc/tests/test_otlp_trace_exporter.py
index 5c8f0407254..36ae0a7c11e 100644
--- a/exporter/opentelemetry-exporter-otlp-proto-grpc/tests/test_otlp_trace_exporter.py
+++ b/exporter/opentelemetry-exporter-otlp-proto-grpc/tests/test_otlp_trace_exporter.py
@@ -281,7 +281,7 @@ def test_otlp_headers_from_env(self, mock_ssl_channel, mock_secure):
             (
                 ("key1", "value1"),
                 ("key2", "VALUE=2"),
-                ("user-agent", "OTel OTLP Exporter Python/" + __version__),
+                ("user-agent", "OTel-OTLP-Exporter-Python/" + __version__),
             ),
         )
         exporter = OTLPSpanExporter(
@@ -293,7 +293,7 @@ def test_otlp_headers_from_env(self, mock_ssl_channel, mock_secure):
             (
                 ("key3", "value3"),
                 ("key4", "value4"),
-                ("user-agent", "OTel OTLP Exporter Python/" + __version__),
+                ("user-agent", "OTel-OTLP-Exporter-Python/" + __version__),
             ),
         )
         exporter = OTLPSpanExporter(
@@ -305,7 +305,7 @@ def test_otlp_headers_from_env(self, mock_ssl_channel, mock_secure):
             (
                 ("key5", "value5"),
                 ("key6", "value6"),
-                ("user-agent", "OTel OTLP Exporter Python/" + __version__),
+                ("user-agent", "OTel-OTLP-Exporter-Python/" + __version__),
             ),
         )
 
@@ -454,7 +454,7 @@ def test_otlp_headers(self, mock_ssl_channel, mock_secure):
         # This ensures that there is no other header than standard user-agent.
         self.assertEqual(
             exporter._headers,
-            (("user-agent", "OTel OTLP Exporter Python/" + __version__),),
+            (("user-agent", "OTel-OTLP-Exporter-Python/" + __version__),),
         )
 
     @patch("opentelemetry.exporter.otlp.proto.grpc.exporter.backoff")
diff --git a/exporter/opentelemetry-exporter-otlp-proto-http/src/opentelemetry/exporter/otlp/proto/http/__init__.py b/exporter/opentelemetry-exporter-otlp-proto-http/src/opentelemetry/exporter/otlp/proto/http/__init__.py
index a14f0e2992d..2c40b39590b 100644
--- a/exporter/opentelemetry-exporter-otlp-proto-http/src/opentelemetry/exporter/otlp/proto/http/__init__.py
+++ b/exporter/opentelemetry-exporter-otlp-proto-http/src/opentelemetry/exporter/otlp/proto/http/__init__.py
@@ -76,7 +76,7 @@
 
 _OTLP_HTTP_HEADERS = {
     "Content-Type": "application/x-protobuf",
-    "User-Agent": "OTel OTLP Exporter Python/" + __version__,
+    "User-Agent": "OTel-OTLP-Exporter-Python/" + __version__,
 }
 
 
diff --git a/exporter/opentelemetry-exporter-otlp-proto-http/tests/test_proto_log_exporter.py b/exporter/opentelemetry-exporter-otlp-proto-http/tests/test_proto_log_exporter.py
index f61a4291ed3..05bdfb9af30 100644
--- a/exporter/opentelemetry-exporter-otlp-proto-http/tests/test_proto_log_exporter.py
+++ b/exporter/opentelemetry-exporter-otlp-proto-http/tests/test_proto_log_exporter.py
@@ -38,6 +38,7 @@
     _encode_value,
     _ProtobufEncoder,
 )
+from opentelemetry.exporter.otlp.proto.http.version import __version__
 from opentelemetry.proto.collector.logs.v1.logs_service_pb2 import (
     ExportLogsServiceRequest,
 )
@@ -96,6 +97,10 @@ def test_constructor_default(self):
             exporter._session.headers.get("Content-Type"),
             "application/x-protobuf",
         )
+        self.assertEqual(
+            exporter._session.headers.get("User-Agent"),
+            "OTel-OTLP-Exporter-Python/" + __version__,
+        )
 
     @patch.dict(
         "os.environ",
diff --git a/exporter/opentelemetry-exporter-otlp-proto-http/tests/test_proto_span_exporter.py b/exporter/opentelemetry-exporter-otlp-proto-http/tests/test_proto_span_exporter.py
index 64ca6fbbb86..a1d96f50b44 100644
--- a/exporter/opentelemetry-exporter-otlp-proto-http/tests/test_proto_span_exporter.py
+++ b/exporter/opentelemetry-exporter-otlp-proto-http/tests/test_proto_span_exporter.py
@@ -28,6 +28,7 @@
     OTLPSpanExporter,
     _is_backoff_v2,
 )
+from opentelemetry.exporter.otlp.proto.http.version import __version__
 from opentelemetry.sdk.environment_variables import (
     OTEL_EXPORTER_OTLP_CERTIFICATE,
     OTEL_EXPORTER_OTLP_COMPRESSION,
@@ -67,6 +68,10 @@ def test_constructor_default(self):
             exporter._session.headers.get("Content-Type"),
             "application/x-protobuf",
         )
+        self.assertEqual(
+            exporter._session.headers.get("User-Agent"),
+            "OTel-OTLP-Exporter-Python/" + __version__,
+        )
 
     @patch.dict(
         "os.environ",