South Africa

(1) Members of the National Assembly may apply to the Constitutional Court for an order declaring that all or part of an Act of Parliament is unconstitutional.
… (Sec. 80)

(1) Members of a provincial legislature may apply to the Constitutional Court for an order declaring that all or part of a provincial Act is unconstitutional.
… (Sec. 122)

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(3) The Constitutional Court-
(a) is the highest court of the Republic; and
(b) may decide -
(i) constitutional matters; and
(ii) any other matter, if the Constitutional Court grants leave to appeal on the grounds that the matter raises an arguable point of law of general public importance which ought to be considered by that Court; and
(c) makes the final decision whether a matter is within its jurisdiction.
(4) Only the Constitutional Court may -
(a) decide disputes between organs of state in the national or provincial sphere concerning the constitutional status, powers or functions of any of those organs of state;
(b) decide on the constitutionality of any parliamentary or provincial Bill, but may do so only in the circumstances anticipated in section 79 or 121;
(c) decide applications envisaged in section 80 or 122;
(d) decide on the constitutionality of any amendment to the Constitution;
(e) decide that Parliament or the President has failed to fulfil a constitutional obligation; or
(f) certify a provincial constitution in terms of section 144.
(5) The Constitutional Court makes the final decision whether an Act of Parliament, a provincial Act or conduct of the President is constitutional, and must confirm any order of invalidity made by the Supreme Court of Appeal, the High Court of South Africa, or a court of similar status, before that order has any force.
(6) National legislation or the rules of the Constitutional Court must allow a person, when it is in the interests of justice and with leave of the Constitutional Court—
(a) to bring a matter directly to the Constitutional Court; or
(b) to appeal directly to the Constitutional Court from any other court.
(7) A constitutional matter includes any issue involving the interpretation, protection or enforcement of the Constitution. (Sec. 167)

(1) The High Court of South Africa may decide-
(a) any constitutional matter except a matter that-
(i) the Constitutional Court has agreed to hear directly in terms of section 167(6)(a); or
(ii) is assigned by an Act of Parliament to another court of a status similar to the High Court of South Africa; and
(b) any other matter not assigned to another court by an Act of Parliament.
… (Sec. 169)

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(2)(a) The Supreme Court of Appeal, the High Court of South Africa or a court of similar status may make an order concerning the constitutional validity of an Act of Parliament, a provincial Act or any conduct of the President, but an order of constitutional invalidity has no force unless it is confirmed by the Constitutional Court.
(b) A court which makes an order of constitutional invalidity may grant a temporary interdict or other temporary relief to a party, or may adjourn the proceedings, pending a decision of the Constitutional Court on the validity of that Act or conduct.
(c) National legislation must provide for the referral of an order of constitutional invalidity to the Constitutional Court.
(d) Any person or organ of state with a sufficient interest may appeal, or apply, directly to the Constitutional Court to confirm or vary an order of constitutional invalidity by a court in terms of this subsection.
… (Sec. 172)