Star Trek: Armada II is a real time strategy video game published by Activision in 2001, based upon the Star Trek universe. The game was developed by Mad Doc Software. It is the sequel to Star Trek: Armada. Star Trek: Armada II was released by Activision a year after they acquired the full rights to all the franchise holding of the video game's franchise from Viacom.

Like its predecessor, Armada II is set in the Star Trek: The Next Generation era of the Star Trek universe. The game showcases events in the Alpha Quadrant between the United Federation of Planets, the Klingon Empire, the Romulan Star Empire, the Cardassian Union, Species 8472, and the Borg.