diff --git a/CHANGELOG.md b/CHANGELOG.md
index e3681187..a71ac9bd 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -8,6 +8,7 @@
   - `BetaReferralCustomerService.create_bank_account_client_secret`
   - `ReferralCustomerService.add_credit_card_from_stripe`
   - `ReferralCustomerService.add_bank_account_from_stripe`
+- Routes `AmazonShippingAccount` create requests to the new `/register_oauth` endpoint
 - Fixes the payload wrapping for updating a webhook
 - Removes deprecated `user.all_api_keys` and `user.api_keys`, use `api_key.all` and `api_key.retrieve_api_keys_for_user` respectively
 - Bumps all dev dependencies
diff --git a/easypost/constant.py b/easypost/constant.py
index 9659e779..066a239a 100644
--- a/easypost/constant.py
+++ b/easypost/constant.py
@@ -36,6 +36,9 @@
     "FedexAccount",
     "FedexSmartpostAccount",
 ]
+_CARRIER_ACCOUNT_TYPES_WITH_CUSTOM_OAUTH = [
+    "AmazonShippingAccount",
+]
 _UPS_OAUTH_CARRIER_ACCOUNT_TYPES = [
     "UpsAccount",
     "UpsMailInnovationsAccount",
diff --git a/easypost/services/carrier_account_service.py b/easypost/services/carrier_account_service.py
index 56258a9f..5708b35c 100644
--- a/easypost/services/carrier_account_service.py
+++ b/easypost/services/carrier_account_service.py
@@ -4,6 +4,7 @@
 )
 
 from easypost.constant import (
+    _CARRIER_ACCOUNT_TYPES_WITH_CUSTOM_OAUTH,
     _CARRIER_ACCOUNT_TYPES_WITH_CUSTOM_WORKFLOWS,
     _UPS_OAUTH_CARRIER_ACCOUNT_TYPES,
     MISSING_PARAMETER_ERROR,
@@ -33,6 +34,8 @@ def create(self, **params) -> CarrierAccount:
         url = self._select_carrier_account_creation_endpoint(carrier_account_type=carrier_account_type)
         if carrier_account_type in _UPS_OAUTH_CARRIER_ACCOUNT_TYPES:
             wrapped_params = {"ups_oauth_registrations": params}
+        elif carrier_account_type in _CARRIER_ACCOUNT_TYPES_WITH_CUSTOM_OAUTH:
+            wrapped_params = {"carrier_account_oauth_registrations": params}
         else:
             wrapped_params = {self._snakecase_name(self._model_class): params}
 
@@ -75,5 +78,7 @@ def _select_carrier_account_creation_endpoint(self, carrier_account_type: Option
             return "/carrier_accounts/register"
         elif carrier_account_type in _UPS_OAUTH_CARRIER_ACCOUNT_TYPES:
             return "/ups_oauth_registrations"
+        elif carrier_account_type in _CARRIER_ACCOUNT_TYPES_WITH_CUSTOM_OAUTH:
+            return "/carrier_accounts/register_oauth"
 
         return "/carrier_accounts"
diff --git a/tests/cassettes/test_carrier_account_create_amazon_shipping.yaml b/tests/cassettes/test_carrier_account_create_amazon_shipping.yaml
new file mode 100644
index 00000000..eae66012
--- /dev/null
+++ b/tests/cassettes/test_carrier_account_create_amazon_shipping.yaml
@@ -0,0 +1,134 @@
+interactions:
+- request:
+    body: '{"carrier_account_oauth_registrations": {"type": "AmazonShippingAccount"}}'
+    headers:
+      Accept:
+      - '*/*'
+      Accept-Encoding:
+      - gzip, deflate
+      Connection:
+      - keep-alive
+      Content-Length:
+      - '74'
+      Content-Type:
+      - application/json
+      authorization:
+      - <REDACTED>
+      user-agent:
+      - <REDACTED>
+    method: POST
+    uri: https://api.easypost.com/v2/carrier_accounts/register_oauth
+  response:
+    body:
+      string: '{"id": "ca_18bfc1a27cc349cfbf219cf0e754f917", "object": "CarrierAccount",
+        "type": "AmazonShippingAccount", "clone": false, "created_at": "2025-04-10T19:12:34Z",
+        "updated_at": "2025-04-10T19:12:34Z", "description": null, "reference": null,
+        "billing_type": "carrier", "readable": "Amazon Shipping", "logo": null, "fields":
+        [], "credentials": {}, "test_credentials": {}}'
+    headers:
+      cache-control:
+      - private, no-cache, no-store
+      content-length:
+      - '1448'
+      content-type:
+      - application/json; charset=utf-8
+      expires:
+      - '0'
+      pragma:
+      - no-cache
+      referrer-policy:
+      - strict-origin-when-cross-origin
+      strict-transport-security:
+      - max-age=31536000; includeSubDomains; preload
+      transfer-encoding:
+      - chunked
+      x-backend:
+      - easypost
+      x-content-type-options:
+      - nosniff
+      x-download-options:
+      - noopen
+      x-ep-request-uuid:
+      - 028443c067f81822e2bbac9c00135101
+      x-frame-options:
+      - SAMEORIGIN
+      x-node:
+      - bigweb54nuq
+      x-permitted-cross-domain-policies:
+      - none
+      x-proxied:
+      - intlb3nuq 284c5d344a
+      - extlb1nuq 99aac35317
+      x-runtime:
+      - '0.225842'
+      x-version-label:
+      - easypost-202504101604-e81adf64e4-master
+      x-xss-protection:
+      - 1; mode=block
+    status:
+      code: 201
+      message: Created
+- request:
+    body: null
+    headers:
+      Accept:
+      - '*/*'
+      Accept-Encoding:
+      - gzip, deflate
+      Connection:
+      - keep-alive
+      Content-Length:
+      - '0'
+      authorization:
+      - <REDACTED>
+      user-agent:
+      - <REDACTED>
+    method: DELETE
+    uri: https://api.easypost.com/v2/carrier_accounts/ca_18bfc1a27cc349cfbf219cf0e754f917
+  response:
+    body:
+      string: '{}'
+    headers:
+      cache-control:
+      - private, no-cache, no-store
+      content-length:
+      - '2'
+      content-type:
+      - application/json; charset=utf-8
+      expires:
+      - '0'
+      pragma:
+      - no-cache
+      referrer-policy:
+      - strict-origin-when-cross-origin
+      strict-transport-security:
+      - max-age=31536000; includeSubDomains; preload
+      transfer-encoding:
+      - chunked
+      x-backend:
+      - easypost
+      x-content-type-options:
+      - nosniff
+      x-download-options:
+      - noopen
+      x-ep-request-uuid:
+      - 028443c067f81822e2bbac9c00135164
+      x-frame-options:
+      - SAMEORIGIN
+      x-node:
+      - bigweb35nuq
+      x-permitted-cross-domain-policies:
+      - none
+      x-proxied:
+      - intlb4nuq 284c5d344a
+      - extlb1nuq 99aac35317
+      x-runtime:
+      - '0.056642'
+      x-version-label:
+      - easypost-202504101604-e81adf64e4-master
+      x-xss-protection:
+      - 1; mode=block
+    status:
+      code: 200
+      message: OK
+version: 1
diff --git a/tests/test_carrier_account.py b/tests/test_carrier_account.py
index 72e1a698..57554394 100644
--- a/tests/test_carrier_account.py
+++ b/tests/test_carrier_account.py
@@ -131,3 +131,19 @@ def test_carrier_account_update_ups(prod_client):
     prod_client.carrier_account.delete(
         updated_carrier_account.id
     )  # Delete the carrier account once it's done being tested.
+
+
+@pytest.mark.vcr()
+def test_carrier_account_create_amazon_shipping(prod_client):
+    """Test registering an Amazon Shipping Carrier Account which uses a different URL and schema."""
+    params = {
+        "type": "AmazonShippingAccount",
+    }
+
+    carrier_account = prod_client.carrier_account.create(**params)
+
+    assert isinstance(carrier_account, CarrierAccount)
+    assert str.startswith(carrier_account.id, "ca_")
+    assert carrier_account.type == "AmazonShippingAccount"
+
+    prod_client.carrier_account.delete(carrier_account.id)  # Delete the carrier account once it's done being tested.