34 may refer to:
34 (number), the natural number following 33 and preceding 35 34 BC AD 34 1934 2034
Science Selenium, a nonmetal in the periodic table 34 Circe, an asteroid in the asteroid belt
Music 34 (album), 2015, by Dre Murray "#34" (song), 1994, by Dave Matthews Band "34", a 2006 song by Saves the Day from Sound the Alarm "Thirty Four", a song by Karma to Burn from the album Almost Heathen, 2001
Other uses +34, the international calling code for Spain
See also 34th (disambiguation) 3/4 (disambiguation) Rule 34 (disambiguation) List of highways numbered 34