diff --git a/.changes/unreleased/Under the Hood-20240423-143055.yaml b/.changes/unreleased/Under the Hood-20240423-143055.yaml
new file mode 100644
index 00000000000..691a26e5ff6
--- /dev/null
+++ b/.changes/unreleased/Under the Hood-20240423-143055.yaml	
@@ -0,0 +1,6 @@
+kind: Under the Hood
+body: Use the SECRET_ENV_PREFIX from dbt_common instead of duplicating it in dbt-core
+time: 2024-04-23T14:30:55.739378-05:00
+custom:
+  Author: emmyoop
+  Issue: "10018"
diff --git a/core/dbt/artifacts/schemas/run/v5/run.py b/core/dbt/artifacts/schemas/run/v5/run.py
index 47cc0cb3b87..d3e6bfa4ece 100644
--- a/core/dbt/artifacts/schemas/run/v5/run.py
+++ b/core/dbt/artifacts/schemas/run/v5/run.py
@@ -5,7 +5,7 @@
 from datetime import datetime
 
 
-from dbt.constants import SECRET_ENV_PREFIX
+from dbt_common.constants import SECRET_ENV_PREFIX
 from dbt.artifacts.resources import CompiledResource
 from dbt.artifacts.schemas.base import (
     BaseArtifactMetadata,
diff --git a/core/dbt/config/renderer.py b/core/dbt/config/renderer.py
index ad2c547be21..75e7f690251 100644
--- a/core/dbt/config/renderer.py
+++ b/core/dbt/config/renderer.py
@@ -4,7 +4,8 @@
 
 from dbt.clients.jinja import get_rendered
 from dbt_common.clients.jinja import catch_jinja
-from dbt.constants import SECRET_ENV_PREFIX, DEPENDENCIES_FILE_NAME, SECRET_PLACEHOLDER
+from dbt_common.constants import SECRET_ENV_PREFIX
+from dbt.constants import DEPENDENCIES_FILE_NAME, SECRET_PLACEHOLDER
 from dbt.context.target import TargetContext
 from dbt.context.secret import SecretContext
 from dbt.context.base import BaseContext
diff --git a/core/dbt/constants.py b/core/dbt/constants.py
index 9ffa7128a69..feaf0957746 100644
--- a/core/dbt/constants.py
+++ b/core/dbt/constants.py
@@ -1,5 +1,3 @@
-# TODO: remove SECRET_ENV_PREFIX and import from dbt_common
-SECRET_ENV_PREFIX = "DBT_ENV_SECRET_"
 DEFAULT_ENV_PLACEHOLDER = "DBT_DEFAULT_PLACEHOLDER"
 
 SECRET_PLACEHOLDER = "$$$DBT_SECRET_START$$${}$$$DBT_SECRET_END$$$"
diff --git a/core/dbt/context/base.py b/core/dbt/context/base.py
index 1c7f4cf9db4..3bc9db78740 100644
--- a/core/dbt/context/base.py
+++ b/core/dbt/context/base.py
@@ -11,7 +11,8 @@
 from dbt import utils
 from dbt.clients.jinja import get_rendered
 from dbt.clients.yaml_helper import yaml, safe_load, SafeLoader, Loader, Dumper  # noqa: F401
-from dbt.constants import SECRET_ENV_PREFIX, DEFAULT_ENV_PLACEHOLDER, SECRET_PLACEHOLDER
+from dbt_common.constants import SECRET_ENV_PREFIX
+from dbt.constants import DEFAULT_ENV_PLACEHOLDER, SECRET_PLACEHOLDER
 from dbt.contracts.graph.nodes import Resource
 from dbt.exceptions import (
     SecretEnvVarLocationError,
diff --git a/core/dbt/context/configured.py b/core/dbt/context/configured.py
index c5c95bbfbcb..10a34d8394c 100644
--- a/core/dbt/context/configured.py
+++ b/core/dbt/context/configured.py
@@ -2,7 +2,8 @@
 
 from dbt_common.context import get_invocation_context
 
-from dbt.constants import SECRET_ENV_PREFIX, DEFAULT_ENV_PLACEHOLDER
+from dbt_common.constants import SECRET_ENV_PREFIX
+from dbt.constants import DEFAULT_ENV_PLACEHOLDER
 from dbt.adapters.contracts.connection import AdapterRequiredConfig
 from dbt.node_types import NodeType
 from dbt.utils import MultiDict
diff --git a/core/dbt/context/providers.py b/core/dbt/context/providers.py
index 90f0a508c8c..2b2ecc83f17 100644
--- a/core/dbt/context/providers.py
+++ b/core/dbt/context/providers.py
@@ -25,7 +25,8 @@
 from dbt.adapters.factory import get_adapter, get_adapter_package_names, get_adapter_type_names
 from dbt.clients.jinja import get_rendered, MacroGenerator, MacroStack, UnitTestMacroGenerator
 from dbt.config import RuntimeConfig, Project
-from dbt.constants import SECRET_ENV_PREFIX, DEFAULT_ENV_PLACEHOLDER
+from dbt_common.constants import SECRET_ENV_PREFIX
+from dbt.constants import DEFAULT_ENV_PLACEHOLDER
 from dbt.context.base import contextmember, contextproperty, Var
 from dbt.context.configured import FQNLookup
 from dbt.context.context_config import ContextConfig
diff --git a/core/dbt/context/secret.py b/core/dbt/context/secret.py
index 849e4903a8b..be6a5428531 100644
--- a/core/dbt/context/secret.py
+++ b/core/dbt/context/secret.py
@@ -4,7 +4,8 @@
 
 from .base import BaseContext, contextmember
 
-from dbt.constants import SECRET_ENV_PREFIX, DEFAULT_ENV_PLACEHOLDER, SECRET_PLACEHOLDER
+from dbt_common.constants import SECRET_ENV_PREFIX
+from dbt.constants import DEFAULT_ENV_PLACEHOLDER, SECRET_PLACEHOLDER
 from dbt.exceptions import EnvVarMissingError
 
 
diff --git a/core/dbt/exceptions.py b/core/dbt/exceptions.py
index 721e65b4c27..eb4d0b97276 100644
--- a/core/dbt/exceptions.py
+++ b/core/dbt/exceptions.py
@@ -17,7 +17,7 @@
 
 from dbt_common.dataclass_schema import ValidationError
 
-from dbt.constants import SECRET_ENV_PREFIX
+from dbt_common.constants import SECRET_ENV_PREFIX
 
 
 if TYPE_CHECKING:
diff --git a/core/dbt/parser/manifest.py b/core/dbt/parser/manifest.py
index 5e406d81d03..be41ee473a5 100644
--- a/core/dbt/parser/manifest.py
+++ b/core/dbt/parser/manifest.py
@@ -44,8 +44,8 @@
     MANIFEST_FILE_NAME,
     PARTIAL_PARSE_FILE_NAME,
     SEMANTIC_MANIFEST_FILE_NAME,
-    SECRET_ENV_PREFIX,
 )
+from dbt_common.constants import SECRET_ENV_PREFIX
 from dbt_common.helper_types import PathSet
 from dbt_common.events.functions import fire_event, get_invocation_id, warn_or_error
 from dbt_common.events.types import (
diff --git a/tests/functional/context_methods/test_env_vars.py b/tests/functional/context_methods/test_env_vars.py
index 33feb3b5de1..ebe1c9e31a3 100644
--- a/tests/functional/context_methods/test_env_vars.py
+++ b/tests/functional/context_methods/test_env_vars.py
@@ -1,7 +1,8 @@
 import pytest
 import os
 
-from dbt.constants import SECRET_ENV_PREFIX, DEFAULT_ENV_PLACEHOLDER
+from dbt_common.constants import SECRET_ENV_PREFIX
+from dbt.constants import DEFAULT_ENV_PLACEHOLDER
 from dbt.tests.util import run_dbt, get_manifest, run_dbt_and_capture
 
 
@@ -55,13 +56,13 @@ def setup(self):
         os.environ["DBT_TEST_ENV_VAR"] = "1"
         os.environ["DBT_TEST_USER"] = "root"
         os.environ["DBT_TEST_PASS"] = "password"
-        os.environ[SECRET_ENV_PREFIX + "SECRET"] = "secret_variable"
+        os.environ[SECRET_ENV_PREFIX + "_SECRET"] = "secret_variable"
         os.environ["DBT_TEST_NOT_SECRET"] = "regular_variable"
         os.environ["DBT_TEST_IGNORE_DEFAULT"] = "ignored_default"
         yield
         del os.environ["DBT_TEST_ENV_VAR"]
         del os.environ["DBT_TEST_USER"]
-        del os.environ[SECRET_ENV_PREFIX + "SECRET"]
+        del os.environ[SECRET_ENV_PREFIX + "_SECRET"]
         del os.environ["DBT_TEST_NOT_SECRET"]
         del os.environ["DBT_TEST_IGNORE_DEFAULT"]
 
diff --git a/tests/functional/context_methods/test_secret_env_vars.py b/tests/functional/context_methods/test_secret_env_vars.py
index 5319857459f..f2447ffcf95 100644
--- a/tests/functional/context_methods/test_secret_env_vars.py
+++ b/tests/functional/context_methods/test_secret_env_vars.py
@@ -1,7 +1,7 @@
 import pytest
 import os
 
-from dbt.constants import SECRET_ENV_PREFIX
+from dbt_common.constants import SECRET_ENV_PREFIX
 from dbt.exceptions import ParsingError, DbtInternalError
 from tests.functional.context_methods.first_dependency import FirstDependencyProject
 from dbt.tests.util import run_dbt, run_dbt_and_capture, read_file
@@ -73,15 +73,15 @@ def test_disallow_secret(self, project):
 class TestAllowSecretProfilePackage(FirstDependencyProject):
     @pytest.fixture(scope="class", autouse=True)
     def setup(self):
-        os.environ[SECRET_ENV_PREFIX + "USER"] = "root"
-        os.environ[SECRET_ENV_PREFIX + "PASS"] = "password"
-        os.environ[SECRET_ENV_PREFIX + "PACKAGE"] = "first_dependency"
-        os.environ[SECRET_ENV_PREFIX + "GIT_TOKEN"] = "abc123"
+        os.environ[SECRET_ENV_PREFIX + "_USER"] = "root"
+        os.environ[SECRET_ENV_PREFIX + "_PASS"] = "password"
+        os.environ[SECRET_ENV_PREFIX + "_PACKAGE"] = "first_dependency"
+        os.environ[SECRET_ENV_PREFIX + "_GIT_TOKEN"] = "abc123"
         yield
-        del os.environ[SECRET_ENV_PREFIX + "USER"]
-        del os.environ[SECRET_ENV_PREFIX + "PASS"]
-        del os.environ[SECRET_ENV_PREFIX + "PACKAGE"]
-        del os.environ[SECRET_ENV_PREFIX + "GIT_TOKEN"]
+        del os.environ[SECRET_ENV_PREFIX + "_USER"]
+        del os.environ[SECRET_ENV_PREFIX + "_PASS"]
+        del os.environ[SECRET_ENV_PREFIX + "_PACKAGE"]
+        del os.environ[SECRET_ENV_PREFIX + "_GIT_TOKEN"]
 
     @pytest.fixture(scope="class")
     def models(self):
@@ -137,7 +137,7 @@ def test_allow_secrets(self, project, first_dependency):
 class TestCloneFailSecretScrubbed:
     @pytest.fixture(scope="class", autouse=True)
     def setup(self):
-        os.environ[SECRET_ENV_PREFIX + "GIT_TOKEN"] = "abc123"
+        os.environ[SECRET_ENV_PREFIX + "_GIT_TOKEN"] = "abc123"
 
     @pytest.fixture(scope="class")
     def models(self):
diff --git a/tests/functional/partial_parsing/test_pp_vars.py b/tests/functional/partial_parsing/test_pp_vars.py
index e55592f8dd2..10cb5c6219f 100644
--- a/tests/functional/partial_parsing/test_pp_vars.py
+++ b/tests/functional/partial_parsing/test_pp_vars.py
@@ -2,7 +2,7 @@
 from pathlib import Path
 
 import pytest
-from dbt.constants import SECRET_ENV_PREFIX
+from dbt_common.constants import SECRET_ENV_PREFIX
 from dbt.exceptions import ParsingError
 from dbt.adapters.exceptions import FailedToConnectError
 from dbt.tests.util import get_manifest, run_dbt, run_dbt_and_capture, write_file
@@ -366,7 +366,7 @@ def dbt_profile_target(self):
 
         # user is secret and password is not. postgres on macos doesn't care if the password
         # changes so we have to change the user. related: https://github.com/dbt-labs/dbt-core/pull/4250
-        os.environ[SECRET_ENV_PREFIX + "USER"] = "root"
+        os.environ[SECRET_ENV_PREFIX + "_USER"] = "root"
         os.environ["ENV_VAR_PASS"] = "password"
         return {
             "type": "postgres",
@@ -381,7 +381,7 @@ def dbt_profile_target(self):
     def test_profile_secret_env_vars(self, project):
 
         # Initial run
-        os.environ[SECRET_ENV_PREFIX + "USER"] = "root"
+        os.environ[SECRET_ENV_PREFIX + "_USER"] = "root"
         os.environ["ENV_VAR_PASS"] = "password"
 
         results = run_dbt(["run"])
@@ -389,7 +389,7 @@ def test_profile_secret_env_vars(self, project):
         env_vars_checksum = manifest.state_check.profile_env_vars_hash.checksum
 
         # Change a secret var, it shouldn't register because we shouldn't save secrets.
-        os.environ[SECRET_ENV_PREFIX + "USER"] = "fake_user"
+        os.environ[SECRET_ENV_PREFIX + "_USER"] = "fake_user"
         # we just want to see if the manifest has included
         # the secret in the hash of environment variables.
         (results, log_output) = run_dbt_and_capture(["run"], expect_pass=True)