O'Sullivan v Noarlunga Meat Ltd (No 2),[1] was a High Court of Australia case, in which a certificate, under s 74 of the Australian Constitution, was sought for leave to appeal to the Privy Council against the previous decision of O'Sullivan v Noarlunga Meat Ltd.[2] In the preceding case, it was held that the Commonwealth's extensive regulations regarding premises used for the slaughtering of livestock for export were valid under s 51(i) of the Constitution.

Dixon CJ, Williams, Webb and Fullagar JJ wrote a joint judgment refusing a certificate of appeal stating that the policy of section 74 was to confine the decision of essentially federal questions to the High Court.

McTiernan, Kitto and Taylor JJ each delivered concurring judgments.

The Privy Council took a narrower view of section 74 than the High Court, holding that the question of whether laws were inconsistent involved the application of section 109 of the Constitution and did not involve a question in relation to the constitutional powers of the Commonwealth and the States.

The Privy Council dismissed the appeal, approving the earlier decision of the statutory majority of the High Court,[3] particularly the judgment of Fullager J.