47, '47 or forty-seven may refer to:
- 47 (number), the natural number following 46 and preceding 48
- 47 BC
- AD 47
- 1947
- 2047
- '47 (brand), an American clothing brand
- '47 (magazine), an American publication
- 47 (song), a song by Sidhu Moose Wala
- 47, a song by New Found Glory from the album Not Without a Fight
- "Forty Seven", a song by Karma to Burn from the album V, 2011
- +47, the international calling code for Norway
- 4seven, a television channel
- Agenda 47, code for the Trumpist plans in the elections for the 47th president
- Donald Trump, the 47th president of the United States
- Agent 47, protagonist of the Hitman video game series
- 47, a young adult novel by Walter Mosley
- 47 Aglaja, a main-belt asteroid
- Kurdish Mafia, a street gang known as 47kurdish mafia or just 47