diff --git a/.changes/unreleased/Features-20220913-084836.yaml b/.changes/unreleased/Features-20220913-084836.yaml
new file mode 100644
index 000000000..0a4bd275d
--- /dev/null
+++ b/.changes/unreleased/Features-20220913-084836.yaml
@@ -0,0 +1,7 @@
+kind: Features
+body: Array macros
+time: 2022-09-13T08:48:36.255365-06:00
+custom:
+  Author: graciegoheen dbeatty10
+  Issue: "307"
+  PR: "308"
diff --git a/dbt/include/bigquery/macros/utils/array_append.sql b/dbt/include/bigquery/macros/utils/array_append.sql
new file mode 100644
index 000000000..78bd5cc43
--- /dev/null
+++ b/dbt/include/bigquery/macros/utils/array_append.sql
@@ -0,0 +1,3 @@
+{% macro bigquery__array_append(array, new_element) -%}
+    {{ array_concat(array, array_construct([new_element])) }}
+{%- endmacro %}
diff --git a/dbt/include/bigquery/macros/utils/array_concat.sql b/dbt/include/bigquery/macros/utils/array_concat.sql
new file mode 100644
index 000000000..eff8f524a
--- /dev/null
+++ b/dbt/include/bigquery/macros/utils/array_concat.sql
@@ -0,0 +1,3 @@
+{% macro bigquery__array_concat(array_1, array_2) -%}
+    array_concat({{ array_1 }}, {{ array_2 }})
+{%- endmacro %}
diff --git a/dbt/include/bigquery/macros/utils/array_construct.sql b/dbt/include/bigquery/macros/utils/array_construct.sql
new file mode 100644
index 000000000..270b1f785
--- /dev/null
+++ b/dbt/include/bigquery/macros/utils/array_construct.sql
@@ -0,0 +1,7 @@
+{% macro bigquery__array_construct(inputs, data_type) -%}
+    {% if inputs|length > 0 %}
+    [ {{ inputs|join(' , ') }} ]
+    {% else %}
+    ARRAY<{{data_type}}>[]
+    {% endif %}
+{%- endmacro %}
diff --git a/tests/functional/adapter/utils/fixture_array_append.py b/tests/functional/adapter/utils/fixture_array_append.py
new file mode 100644
index 000000000..0558d66e1
--- /dev/null
+++ b/tests/functional/adapter/utils/fixture_array_append.py
@@ -0,0 +1,13 @@
+# array_append
+
+# EXCEPT can't be used with ARRAYs in BigQuery, so convert to a string
+models__array_append_expected_sql = """
+select 1 as id, {{ array_to_string(array_construct([1,2,3,4])) }} as array_col union all
+select 2 as id, {{ array_to_string(array_construct([4])) }} as array_col
+"""
+
+
+models__array_append_actual_sql = """
+select 1 as id, {{ array_to_string(array_append(array_construct([1,2,3]), 4)) }} as array_col union all
+select 2 as id, {{ array_to_string(array_append(array_construct([]), 4)) }} as array_col
+"""
diff --git a/tests/functional/adapter/utils/fixture_array_concat.py b/tests/functional/adapter/utils/fixture_array_concat.py
new file mode 100644
index 000000000..51af8bf12
--- /dev/null
+++ b/tests/functional/adapter/utils/fixture_array_concat.py
@@ -0,0 +1,15 @@
+# array_concat
+
+# EXCEPT can't be used with ARRAYs in BigQuery, so convert to a string
+models__array_concat_expected_sql = """
+select 1 as id, {{ array_to_string(array_construct([1,2,3,4,5,6])) }} as array_col union all
+select 2 as id, {{ array_to_string(array_construct([2])) }} as array_col union all
+select 3 as id, {{ array_to_string(array_construct([3])) }} as array_col
+"""
+
+
+models__array_concat_actual_sql = """
+select 1 as id, {{ array_to_string(array_concat(array_construct([1,2,3]), array_construct([4,5,6]))) }} as array_col union all
+select 2 as id, {{ array_to_string(array_concat(array_construct([]), array_construct([2]))) }} as array_col union all
+select 3 as id, {{ array_to_string(array_concat(array_construct([3]), array_construct([]))) }} as array_col
+"""
diff --git a/tests/functional/adapter/utils/fixture_array_construct.py b/tests/functional/adapter/utils/fixture_array_construct.py
new file mode 100644
index 000000000..13d0bb2f3
--- /dev/null
+++ b/tests/functional/adapter/utils/fixture_array_construct.py
@@ -0,0 +1,20 @@
+# array_construct
+
+# EXCEPT can't be used with ARRAYs in BigQuery, so convert to a string
+models__array_construct_expected_sql = """
+select 1 as id, {{ array_to_string(array_construct([1,2,3])) }} as array_col union all
+select 2 as id, {{ array_to_string(array_construct([])) }} as array_col
+"""
+
+
+models__array_construct_actual_sql = """
+select 1 as id, {{ array_to_string(array_construct([1,2,3])) }} as array_col union all
+select 2 as id, {{ array_to_string(array_construct([])) }} as array_col
+"""
+
+
+macros__array_to_string_sql = """
+{% macro array_to_string(array) %}
+    (select string_agg(cast(element as string), ',') from unnest({{ array }}) element)
+{% endmacro %}
+"""
diff --git a/tests/functional/adapter/utils/test_utils.py b/tests/functional/adapter/utils/test_utils.py
index ae1aadcbc..5f5c5d83b 100644
--- a/tests/functional/adapter/utils/test_utils.py
+++ b/tests/functional/adapter/utils/test_utils.py
@@ -1,5 +1,8 @@
 import pytest
-from dbt.tests.adapter.utils.base_utils import BaseUtils
+
+from dbt.tests.adapter.utils.test_array_append import BaseArrayAppend
+from dbt.tests.adapter.utils.test_array_concat import BaseArrayConcat
+from dbt.tests.adapter.utils.test_array_construct import BaseArrayConstruct
 from dbt.tests.adapter.utils.test_any_value import BaseAnyValue
 from dbt.tests.adapter.utils.test_bool_or import BaseBoolOr
 from dbt.tests.adapter.utils.test_cast_bool_to_text import BaseCastBoolToText
@@ -22,12 +25,70 @@
 from dbt.tests.adapter.utils.test_safe_cast import BaseSafeCast
 from dbt.tests.adapter.utils.test_split_part import BaseSplitPart
 from dbt.tests.adapter.utils.test_string_literal import BaseStringLiteral
+from tests.functional.adapter.utils.fixture_array_append import (
+    models__array_append_actual_sql,
+    models__array_append_expected_sql,
+)
+from tests.functional.adapter.utils.fixture_array_concat import (
+    models__array_concat_actual_sql,
+    models__array_concat_expected_sql,
+)
+from tests.functional.adapter.utils.fixture_array_construct import (
+    models__array_construct_actual_sql,
+    models__array_construct_expected_sql,
+    macros__array_to_string_sql,
+)
 
 
 class TestAnyValue(BaseAnyValue):
     pass
 
 
+class TestArrayAppend(BaseArrayAppend):
+    @pytest.fixture(scope="class")
+    def models(self):
+        return {
+            "actual.sql": models__array_append_actual_sql,
+            "expected.sql": models__array_append_expected_sql,
+        }
+
+    @pytest.fixture(scope="class")
+    def macros(self):
+        return {
+            "array_to_string.sql": macros__array_to_string_sql,
+        }
+
+
+class TestArrayConcat(BaseArrayConcat):
+    @pytest.fixture(scope="class")
+    def models(self):
+        return {
+            "actual.sql": models__array_concat_actual_sql,
+            "expected.sql": models__array_concat_expected_sql,
+        }
+
+    @pytest.fixture(scope="class")
+    def macros(self):
+        return {
+            "array_to_string.sql": macros__array_to_string_sql,
+        }
+
+
+class TestArrayConstruct(BaseArrayConstruct):
+    @pytest.fixture(scope="class")
+    def models(self):
+        return {
+            "actual.sql": models__array_construct_actual_sql,
+            "expected.sql": models__array_construct_expected_sql,
+        }
+
+    @pytest.fixture(scope="class")
+    def macros(self):
+        return {
+            "array_to_string.sql": macros__array_to_string_sql,
+        }
+
+
 class TestBoolOr(BaseBoolOr):
     pass