diff --git a/CHANGELOG.md b/CHANGELOG.md
index 785ce8c5..e17d1b04 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -7,6 +7,9 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+### Added
+- `datacontract export protobuf` supports a customizable package name via the `protoPackageName` custom property (#1381)
+
 ### Fixed
 - SyntaxWarning during installation: `datacontract/lint/resolve.py:72: SyntaxWarning: 'return' in a 'finally' block return except_message` is handled properly
 
diff --git a/datacontract/export/protobuf_exporter.py b/datacontract/export/protobuf_exporter.py
index 2265f53b..cc8a4ed0 100644
--- a/datacontract/export/protobuf_exporter.py
+++ b/datacontract/export/protobuf_exporter.py
@@ -1,11 +1,16 @@
+import re
 from typing import List, Optional
 
 from open_data_contract_standard.model import OpenDataContractStandard, SchemaProperty
 
 from datacontract.export.exporter import Exporter
+from datacontract.model.exceptions import DataContractException
 
 OBJECT_TYPES: set = {"object", "record", "struct"}
 
+# A valid proto package is a dot-separated sequence of identifiers.
+_PROTO_PACKAGE_PATTERN = re.compile(r"^[A-Za-z_][A-Za-z0-9_]*(\.[A-Za-z_][A-Za-z0-9_]*)*$")
+
 
 class ProtoBufExporter(Exporter):
     def export(self, data_contract, schema_name, server, sql_server_type, export_args) -> str:
@@ -31,6 +36,27 @@ def _get_logical_type_option(prop: SchemaProperty, key: str):
     return prop.logicalTypeOptions.get(key)
 
 
+def _get_proto_package_name(data_contract: OpenDataContractStandard) -> str:
+    """
+    Returns the Protobuf package name from the contract's customProperties
+    ("protoPackageName"), falling back to "example".
+    """
+    if data_contract.customProperties is None:
+        return "example"
+    for cp in data_contract.customProperties:
+        if cp.property == "protoPackageName" and cp.value:
+            if not _PROTO_PACKAGE_PATTERN.match(cp.value):
+                raise DataContractException(
+                    type="protobuf-export",
+                    name="invalid-proto-package-name",
+                    reason=f"Invalid protoPackageName '{cp.value}'. "
+                    "Must be a dot-separated sequence of identifiers, e.g. 'com.example.mydata'.",
+                    engine="datacontract",
+                )
+            return cp.value
+    return "example"
+
+
 def to_protobuf(data_contract: OpenDataContractStandard) -> str:
     """
     Generates a Protobuf file from the data contract specification.
@@ -58,7 +84,7 @@ def to_protobuf(data_contract: OpenDataContractStandard) -> str:
 
     # Build header with syntax and package declarations.
     header = 'syntax = "proto3";\n\n'
-    package = "example"  # Default package, can be customized
+    package: str = _get_proto_package_name(data_contract)
     header += f"package {package};\n\n"
 
     # Append enum definitions before messages.
diff --git a/docs/docs/exports/protobuf.md b/docs/docs/exports/protobuf.md
index 4da33e0b..cfd47dc7 100644
--- a/docs/docs/exports/protobuf.md
+++ b/docs/docs/exports/protobuf.md
@@ -51,3 +51,25 @@ message LineItems {
 ```
 
 {/* END AUTOGENERATED EXAMPLE */}
+
+## Configuration
+
+You can customize the generated Protobuf package name using the data contract's `customProperties`:
+
+```yaml
+kind: DataContract
+apiVersion: v3.1.0
+id: my-contract
+version: 1.0.0
+customProperties:
+  - property: protoPackageName
+    value: com.example.mydata
+schema:
+  - name: Orders
+    properties:
+      # ... fields ...
+```
+
+### Supported Properties
+
+- **`protoPackageName`** (optional) — The package name for the generated Protobuf file. Defaults to `"example"` if not specified.
diff --git a/tests/test_export_protobuf.py b/tests/test_export_protobuf.py
index 407325f3..fd3c4a02 100644
--- a/tests/test_export_protobuf.py
+++ b/tests/test_export_protobuf.py
@@ -1,9 +1,11 @@
+import pytest
 import yaml
 from open_data_contract_standard.model import OpenDataContractStandard
 from typer.testing import CliRunner
 
 from datacontract.cli import app
 from datacontract.export.protobuf_exporter import to_protobuf
+from datacontract.model.exceptions import DataContractException
 
 # logging.basicConfig(level=logging.DEBUG, force=True)
 
@@ -130,3 +132,44 @@ def test_to_protobuf():
     result = to_protobuf(data_contract).strip()
 
     assert result == expected_protobuf
+
+
+def test_to_protobuf_custom_package_name():
+    odcs_yaml = """
+kind: DataContract
+apiVersion: v3.1.0
+id: test_protobuf
+customProperties:
+  - property: protoPackageName
+    value: com.example.product
+schema:
+  - name: Product
+    properties:
+      - name: id
+        logicalType: string
+"""
+    data_contract = OpenDataContractStandard(**yaml.safe_load(odcs_yaml))
+
+    result = to_protobuf(data_contract)
+
+    assert "package com.example.product;\n" in result
+
+
+def test_to_protobuf_invalid_package_name():
+    odcs_yaml = """
+kind: DataContract
+apiVersion: v3.1.0
+id: test_protobuf
+customProperties:
+  - property: protoPackageName
+    value: "123 not a package!"
+schema:
+  - name: Product
+    properties:
+      - name: id
+        logicalType: string
+"""
+    data_contract = OpenDataContractStandard(**yaml.safe_load(odcs_yaml))
+
+    with pytest.raises(DataContractException):
+        to_protobuf(data_contract)