This is a list of cases reported in volume 279 of United States Reports, decided by the Supreme Court of the United States in 1929.

The Supreme Court is established by Article III, Section 1 of the Constitution of the United States, which says: "The judicial Power of the United States, shall be vested in one supreme Court .

The size of the Court is not specified; the Constitution leaves it to Congress to set the number of justices.

When the cases in volume 279 were decided the Court comprised the following nine members: United States v. Schwimmer, 279 U.S. 644 (1929), concerned a pacifist applicant for naturalization who in the interview declared not to be willing to "take up arms personally" in defense of the United States.

Originally found unable by the District Court for the Northern District of Illinois to take the prescribed oath of allegiance, a decision reversed on appeal, the case was ultimately argued before the Supreme Court, which ruled against the applicant and so denied her the possibility of becoming a United States citizen.