Sirius Black can refer to:
- Sirius Black I (1845 - 1853): the elder brother of Phineas Nigellus Black.
- Sirius Black II (1877 - 1953): the eldest son of Phineas Nigellus Black and Ursula Flint.
- Sirius Black III (1959 - 1996): the elder son of Orion Black and Walburga Black, brother of Regulus Black and godfather of Harry Potter.
- Stubby Boardman: a musician reported to be Sirius Black in The Quibbler.
Behind the scenes
- All Sirius Blacks are the eldest sons in the family.