diff --git a/README.md b/README.md
index 2cf2fd37..ca9b8268 100644
--- a/README.md
+++ b/README.md
@@ -59,9 +59,28 @@ option that will be automatically enabled if you are connecting to a MotherDuck
 
 #### DuckDB Extensions, Settings, and Filesystems
 
-You can load any supported [DuckDB extensions](https://duckdb.org/docs/extensions/overview) by listing them in
-the `extensions` field in your profile. You can also set any additional [DuckDB configuration options](https://duckdb.org/docs/sql/configuration)
-via the `settings` field, including options that are supported in any loaded extensions. To use the [DuckDB Secrets Manager](https://duckdb.org/docs/configuration/secrets_manager.html), you can use the `secrets` field. For example, to be able to connect to S3 and read/write
+You can install and load any core [DuckDB extensions](https://duckdb.org/docs/extensions/overview) by listing them in
+the `extensions` field in your profile as a string. You can also set any additional [DuckDB configuration options](https://duckdb.org/docs/sql/configuration)
+via the `settings` field, including options that are supported in the loaded extensions. You can also configure extensions from outside of the core
+extension repository (e.g., a community extension) by configuring the extension as a `name`/`repo` pair:
+
+```
+default:
+  outputs:
+    dev:
+      type: duckdb
+      path: /tmp/dbt.duckdb
+      extensions:
+        - httpfs
+        - parquet
+        - name: h3
+          repo: community
+        - name: uc_catalog
+          repo: core_nightly
+  target: dev
+```
+
+To use the [DuckDB Secrets Manager](https://duckdb.org/docs/configuration/secrets_manager.html), you can use the `secrets` field. For example, to be able to connect to S3 and read/write
 Parquet files using an AWS access key and secret, your profile would look something like this:
 
 ```
diff --git a/dbt/adapters/duckdb/credentials.py b/dbt/adapters/duckdb/credentials.py
index eebc0149..9f69fcf1 100644
--- a/dbt/adapters/duckdb/credentials.py
+++ b/dbt/adapters/duckdb/credentials.py
@@ -5,7 +5,7 @@
 from typing import Dict
 from typing import List
 from typing import Optional
-from typing import Tuple
+from typing import Union
 from urllib.parse import urlparse
 
 from dbt_common.dataclass_schema import dbtClassMixin
@@ -80,6 +80,12 @@ class Retries(dbtClassMixin):
     retryable_exceptions: List[str] = field(default_factory=lambda: ["IOException"])
 
 
+@dataclass
+class Extension(dbtClassMixin):
+    name: str
+    repo: str
+
+
 @dataclass
 class DuckDBCredentials(Credentials):
     database: str = "main"
@@ -91,7 +97,7 @@ class DuckDBCredentials(Credentials):
     config_options: Optional[Dict[str, Any]] = None
 
     # any DuckDB extensions we want to install and load (httpfs, parquet, etc.)
-    extensions: Optional[Tuple[str, ...]] = None
+    extensions: Optional[List[Union[str, Dict[str, str]]]] = None
 
     # any additional pragmas we want to configure on our DuckDB connections;
     # a list of the built-in pragmas can be found here:
diff --git a/dbt/adapters/duckdb/environments/__init__.py b/dbt/adapters/duckdb/environments/__init__.py
index 208e763f..ca44691b 100644
--- a/dbt/adapters/duckdb/environments/__init__.py
+++ b/dbt/adapters/duckdb/environments/__init__.py
@@ -12,6 +12,7 @@
 from dbt_common.exceptions import DbtRuntimeError
 
 from ..credentials import DuckDBCredentials
+from ..credentials import Extension
 from ..plugins import BasePlugin
 from ..utils import SourceConfig
 from ..utils import TargetConfig
@@ -167,8 +168,16 @@ def initialize_db(
         # install any extensions on the connection
         if creds.extensions is not None:
             for extension in creds.extensions:
-                conn.install_extension(extension)
-                conn.load_extension(extension)
+                if isinstance(extension, str):
+                    conn.install_extension(extension)
+                    conn.load_extension(extension)
+                elif isinstance(extension, dict):
+                    try:
+                        ext = Extension(**extension)
+                    except Exception as e:
+                        raise DbtRuntimeError(f"Failed to parse extension: {e}")
+                    conn.execute(f"install {ext.name} from {ext.repo}")
+                    conn.load_extension(ext.name)
 
         # Attach any fsspec filesystems on the database
         if creds.filesystems:
diff --git a/tests/functional/adapter/test_community_extensions.py b/tests/functional/adapter/test_community_extensions.py
new file mode 100644
index 00000000..b0bebfc4
--- /dev/null
+++ b/tests/functional/adapter/test_community_extensions.py
@@ -0,0 +1,54 @@
+import pytest
+from dbt.tests.util import (
+    check_relation_types,
+    check_relations_equal,
+    check_result_nodes_by_name,
+    relation_from_name,
+    run_dbt,
+)
+
+class BaseCommunityExtensions:
+
+    @pytest.fixture(scope="class")
+    def dbt_profile_target(self, dbt_profile_target):
+        dbt_profile_target["extensions"] = [
+            {"name": "quack", "repo": "community"},
+        ]
+        return dbt_profile_target
+
+    @pytest.fixture(scope="class")
+    def models(self):
+        return {
+            "quack_model.sql": "select quack('world') as quack_world",
+        }
+
+    @pytest.fixture(scope="class")
+    def project_config_update(self):
+        return {
+            "name": "base",
+        }
+
+    def test_base(self, project):
+
+        # run command
+        results = run_dbt()
+        # run result length
+        assert len(results) == 1
+
+        # names exist in result nodes
+        check_result_nodes_by_name(
+            results,
+            [
+                "quack_model",
+            ],
+        )
+
+        # check relation types
+        expected = {
+            "quack_model": "view",
+        }
+        check_relation_types(project.adapter, expected)
+
+@pytest.mark.skip_profile("buenavista")
+class TestCommunityExtensions(BaseCommunityExtensions):
+    pass