System L-370 is a star system. This system originally had seven planets. It was located near the L-374 and Rigel systems.

In 2266, the system was charted by the USS Enterprise. The following year, the system was attacked by the planet killer; all seven planets were destroyed. (TOS: "The Doomsday Machine")

• L-370 (primary)
  • L-370 I
  • L-370 II
  • L-370 III
  • L-370 IV
  • L-370 V
  • L-370 VI
  • L-370 VII