The 2270s decade covers the period from 2270-2279.
- The original USS Enterprise is refitted. (Star Trek: The Motion Picture)
- V'ger heads for Earth. The IKS Amar and two other vessels attempt to intercept V'ger in Klingon space, but are vaporized out of existence by the energy cloud. (Star Trek: The Motion Picture)
- Stardate 7410.2: Admiral James T. Kirk assumes command of the USS Enterprise to intercept V'ger. (Star Trek: The Motion Picture)
- Stardate 7414.1: The crew of the USS Enterprise encounter V'ger and guide it to enter its next evolutionary phase. (Star Trek: The Motion Picture)
- Tuvok undergoes training with a Vulcan master in order to control his emotions. (VOY: "Gravity")
- Pardek becomes a member of the Romulan Senate. (TNG: "Unification I")
- Contact with the SS Artemis is lost on stardate 7780.85, and the ship eventually crash-lands on Tau Cygna V. Two thirds of the crew died of hyperonic radiation before the survivors manage to establish a colony, that by 2366 was thriving. (TNG: "The Ensigns of Command")