71 may refer to:
- 71 (number)
- one of the years 71 BC, AD 71, 1971, 2071
- '71 (film), 2014 British film set in Belfast in 1971
- 71: Into the Fire, 2010 South Korean film
- Various highways; see List of highways numbered 71
- The atomic number of lutetium, a lanthanide
- The number of the French department Saône-et-Loire