diff --git a/src/sagemaker/config/config_utils.py b/src/sagemaker/config/config_utils.py
index 70f2764529..e81a620c9a 100644
--- a/src/sagemaker/config/config_utils.py
+++ b/src/sagemaker/config/config_utils.py
@@ -20,6 +20,8 @@
 import logging
 import sys
 from typing import Callable
+import re
+from copy import deepcopy
 
 
 def get_sagemaker_config_logger():
@@ -67,6 +69,19 @@ def _log_sagemaker_config_single_substitution(source_value, config_value, config
     """
     logger = get_sagemaker_config_logger()
 
+    source_value_log_copy = deepcopy(source_value)
+    config_value_log_copy = deepcopy(config_value)
+
+    if isinstance(source_value_log_copy, dict):
+        for key in source_value_log_copy.keys():
+            if re.search(r"(secret|password|key|token)", key, re.IGNORECASE):
+                source_value_log_copy[key] = "***"
+
+    if isinstance(config_value_log_copy, dict):
+        for key in config_value_log_copy.keys():
+            if re.search(r"(secret|password|key|token)", key, re.IGNORECASE):
+                config_value_log_copy[key] = "***"
+
     if config_value is not None:
 
         if source_value is None:
@@ -79,7 +94,7 @@ def _log_sagemaker_config_single_substitution(source_value, config_value, config
                 logger.debug(
                     "Applied value\n  config key = %s\n  config value that will be used = %s",
                     config_key_path,
-                    config_value,
+                    config_value_log_copy,
                 )
             else:
                 logger.info(
@@ -102,8 +117,8 @@ def _log_sagemaker_config_single_substitution(source_value, config_value, config
                     "  source value that will be used = %s"
                 ),
                 config_key_path,
-                config_value,
-                source_value,
+                config_value_log_copy,
+                source_value_log_copy,
             )
         elif source_value is not None and config_value != source_value:
             # Sagemaker Config had a value defined that is NOT going to be used
@@ -117,8 +132,8 @@ def _log_sagemaker_config_single_substitution(source_value, config_value, config
                     "  source value that will be used = %s",
                 ),
                 config_key_path,
-                config_value,
-                source_value,
+                config_value_log_copy,
+                source_value_log_copy,
             )
     else:
         # nothing was specified in the config and nothing is being automatically applied
diff --git a/tests/unit/test_utils.py b/tests/unit/test_utils.py
index deb295e6e1..2f0fd77580 100644
--- a/tests/unit/test_utils.py
+++ b/tests/unit/test_utils.py
@@ -15,6 +15,7 @@
 from __future__ import absolute_import
 
 import copy
+import logging
 import shutil
 import tarfile
 from datetime import datetime
@@ -59,6 +60,7 @@
     _validate_new_tags,
     remove_tag_with_key,
 )
+from src.sagemaker.config.config_utils import _log_sagemaker_config_single_substitution
 from tests.unit.sagemaker.workflow.helpers import CustomStep
 from sagemaker.workflow.parameters import ParameterString, ParameterInteger
 
@@ -1279,6 +1281,87 @@ def test_resolve_value_from_config():
     mock_info_logger.reset_mock()
 
 
+class TestLogSagemakerConfig(TestCase):
+
+    def test_sensitive_info_masking(self):
+        logger = logging.getLogger("sagemaker.config")
+        logger.setLevel(logging.DEBUG)
+
+        stream_handler = logging.StreamHandler()
+        logger.addHandler(stream_handler)
+
+        # source value is None
+        with self.assertLogs(logger, level="DEBUG") as log:
+            _log_sagemaker_config_single_substitution(
+                None, {"apiKey": "topsecretkey"}, "config/path"
+            )
+
+        self.assertIn("config value that will be used = {'apiKey': '***'}", log.output[0])
+
+        # source value is None and config_value == source_value
+        with self.assertLogs(logger, level="DEBUG") as log:
+            _log_sagemaker_config_single_substitution(
+                {"secretword": "topsecretword"}, {"secretword": "topsecretword"}, "config/path"
+            )
+
+        self.assertIn("Skipped value", log.output[0])
+        self.assertIn("source value that will be used = {'secretword': '***'}", log.output[0])
+        self.assertIn("config value = {'secretword': '***'}", log.output[0])
+
+        # source value is not None and config_value != source_value
+        with self.assertLogs(logger, level="DEBUG") as log:
+            _log_sagemaker_config_single_substitution(
+                {"password": "supersecretpassword"}, {"apiKey": "topsecretkey"}, "config/path"
+            )
+
+        self.assertIn("Skipped value", log.output[0])
+        self.assertIn("source value that will be used = {'password': '***'}", log.output[0])
+        self.assertIn("config value = {'apiKey': '***'}", log.output[0])
+
+    def test_non_sensitive_info_masking(self):
+        logger = logging.getLogger("sagemaker.config")
+        logger.setLevel(logging.DEBUG)
+
+        stream_handler = logging.StreamHandler()
+        logger.addHandler(stream_handler)
+
+        # source value is None
+        with self.assertLogs(logger, level="DEBUG") as log:
+            _log_sagemaker_config_single_substitution(
+                None, {"username": "randomvalue"}, "config/path"
+            )
+
+        self.assertIn("config value that will be used = {'username': 'randomvalue'}", log.output[0])
+
+        # source value is not None and config_value == source_value
+        with self.assertLogs(logger, level="DEBUG") as log:
+            _log_sagemaker_config_single_substitution(
+                {"nonsensitivevalue": "randomvalue"},
+                {"nonsensitivevalue": "randomvalue"},
+                "config/path",
+            )
+
+        self.assertIn("Skipped value", log.output[0])
+        self.assertIn(
+            "source value that will be used = {'nonsensitivevalue': 'randomvalue'}", log.output[0]
+        )
+        self.assertIn("config value = {'nonsensitivevalue': 'randomvalue'}", log.output[0])
+
+        # source value is not None and config_value != source_value
+        with self.assertLogs(logger, level="DEBUG") as log:
+            _log_sagemaker_config_single_substitution(
+                {"username": "nonsensitiveinfo"},
+                {"configvalue": "nonsensitivevalue"},
+                "config/path/non_sensitive",
+            )
+
+        self.assertIn("Skipped value", log.output[0])
+        self.assertIn(
+            "source value that will be used = {'username': 'nonsensitiveinfo'}", log.output[0]
+        )
+        self.assertIn("config value = {'configvalue': 'nonsensitivevalue'}", log.output[0])
+
+
 def test_get_sagemaker_config_value():
     mock_config_logger = Mock()