diff --git a/src/autoqasm/types/types.py b/src/autoqasm/types/types.py
index 3739740..1963049 100644
--- a/src/autoqasm/types/types.py
+++ b/src/autoqasm/types/types.py
@@ -96,7 +96,13 @@ def __init__(
 
 
 class ArrayVar(oqpy.ArrayVar):
-    def __init__(self, *args, annotations: str | Iterable[str] | None = None, **kwargs):
+    def __init__(
+        self,
+        init_expression: Iterable,
+        *args,
+        annotations: str | Iterable[str] | None = None,
+        **kwargs,
+    ):
         if (
             program.get_program_conversion_context().subroutines_processing
             or not program.get_program_conversion_context().at_function_root_scope
@@ -104,8 +110,17 @@ def __init__(self, *args, annotations: str | Iterable[str] | None = None, **kwar
             raise errors.InvalidArrayDeclaration(
                 "Arrays may only be declared at the root scope of an AutoQASM main function."
             )
+
+        if not isinstance(init_expression, Iterable):
+            raise errors.InvalidArrayDeclaration("init_expression must be an iterable type.")
+
+        dimensions = [len(init_expression)]
         super(ArrayVar, self).__init__(
-            *args, annotations=make_annotations_list(annotations), **kwargs
+            init_expression=init_expression,
+            *args,
+            annotations=make_annotations_list(annotations),
+            dimensions=dimensions,
+            **kwargs,
         )
         self.name = program.get_program_conversion_context().next_var_name(oqpy.ArrayVar)
 
diff --git a/test/unit_tests/autoqasm/test_types.py b/test/unit_tests/autoqasm/test_types.py
index 5b63dc4..ec4ff93 100644
--- a/test/unit_tests/autoqasm/test_types.py
+++ b/test/unit_tests/autoqasm/test_types.py
@@ -186,9 +186,9 @@ def test_declare_array():
 
     @aq.main
     def declare_array():
-        a = aq.ArrayVar([1, 2, 3], base_type=aq.IntVar, dimensions=[3])
+        a = aq.ArrayVar([1, 2, 3], base_type=aq.IntVar)
         a[0] = 11
-        b = aq.ArrayVar([4, 5, 6], base_type=aq.IntVar, dimensions=[3])
+        b = aq.ArrayVar([4, 5, 6], base_type=aq.IntVar)
         b[2] = 14
         b = a
 
@@ -207,8 +207,8 @@ def test_invalid_array_assignment():
 
     @aq.main
     def invalid():
-        a = aq.ArrayVar([1, 2, 3], base_type=aq.IntVar, dimensions=[3])
-        b = aq.ArrayVar([4, 5], base_type=aq.IntVar, dimensions=[2])
+        a = aq.ArrayVar([1, 2, 3], base_type=aq.IntVar)
+        b = aq.ArrayVar([4, 5], base_type=aq.IntVar)
         a = b  # noqa: F841
 
     with pytest.raises(aq.errors.InvalidAssignmentStatement):
@@ -221,7 +221,7 @@ def test_declare_array_in_local_scope():
     @aq.main
     def declare_array():
         if aq.BoolVar(True):
-            _ = aq.ArrayVar([1, 2, 3], base_type=aq.IntVar, dimensions=[3])
+            _ = aq.ArrayVar([1, 2, 3], base_type=aq.IntVar)
 
     with pytest.raises(aq.errors.InvalidArrayDeclaration):
         declare_array.build()
@@ -236,7 +236,7 @@ def main() -> list[int]:
 
     @aq.subroutine
     def declare_array():
-        _ = aq.ArrayVar([1, 2, 3], dimensions=[3])
+        _ = aq.ArrayVar([1, 2, 3])
 
     with pytest.raises(aq.errors.InvalidArrayDeclaration):
         main.build()
@@ -383,7 +383,7 @@ def annotation_test(input: list[int]):
 
     @aq.main
     def main():
-        a = aq.ArrayVar([1, 2, 3, 4, 5, 6, 7, 8, 9, 10], dimensions=[10])
+        a = aq.ArrayVar([1, 2, 3, 4, 5, 6, 7, 8, 9, 10])
         annotation_test(a)
 
     with pytest.raises(aq.errors.ParameterTypeError):
@@ -724,3 +724,41 @@ def main():
 
     with pytest.raises(aq.errors.ParameterTypeError):
         main.build()
+
+
+def test_array_does_not_accept_dimensions_argument():
+    @aq.main
+    def declare_array():
+        aq.ArrayVar([1, 2, 3], base_type=aq.IntVar, dimensions=[3])
+
+    with pytest.raises(TypeError):
+        declare_array.build()
+
+
+def test_array_requires_init_expression():
+    @aq.main
+    def declare_array():
+        aq.ArrayVar()
+
+    with pytest.raises(TypeError):
+        declare_array.build()
+
+
+def test_array_init_expression_type():
+    @aq.main
+    def declare_array():
+        aq.ArrayVar(1)
+
+    with pytest.raises(aq.errors.InvalidArrayDeclaration):
+        declare_array.build()
+
+
+def test_array_supports_multidimensional_arrays():
+    @aq.main
+    def declare_array():
+        aq.ArrayVar([[1, 2], [3, 4]])
+
+    expected = """OPENQASM 3.0;
+array[int[32], 2, 2] a = {{1, 2}, {3, 4}};"""
+
+    declare_array.build().to_ir() == expected