Look up sine in Wiktionary, the free dictionary.
Sine is a trigonometric function.
Sine may also refer to:
- Maurice Sinet or Siné (1928–2016), a French cartoonist
- Intira Charoenpura or Sine, a Thai actress
- Sine FM, a community radio station based in Doncaster, South Yorkshire
- Short interspersed nuclear elements (SINEs), a short DNA sequences in eukaryote genomes
- Sine bar
- Sine (album), a 2008 album by C418