Species II is a 1998 American science fiction horror thriller film directed by Peter Medak. The film is a sequel to Species (1995) and the second installment of the Species series. The film stars Michael Madsen, Natasha Henstridge, Marg Helgenberger, Mykelti Williamson, George Dzundza, James Cromwell and Justin Lazard. In addition to Madsen and Helgenberger reprising their roles, Henstridge also returned for the sequel as a new character. The plot has Patrick Ross, the astronaut son of a senator, being infected by an extraterrestrial organism during a mission to Mars and causing the deaths of many women upon his return. To stop him, the scientists who created the human-extraterrestrial hybrid Sil in the original Species try using a more docile clone of hers, Eve.

The film was theatrically released on April 10, 1998. Compared to its predecessor, the film was panned by critics and was a box-office bomb, only grossing $30 million worldwide, and $19.2 million domestically. Despite this, a made-for-television sequel, Species III, was released in 2004.