Cobra is a 1986 American action drama film directed by George P. Cosmatos and written by Sylvester Stallone, who stars in the titular role. The film, loosely based on the novel A Running Duck by Paula Gosling (later published as Fair Game and filmed under that title in 1995), co-stars Reni Santoni, Brigitte Nielsen and Andrew Robinson. Cobra follows Los Angeles police Lt. Marion "Cobra" Cobretti, who investigates a string of violent crimes and also protects a witness targeted by the perpetrators.

Cobra is the final film which featured the collaboration between Stallone and Nielsen after Rocky IV (1985) and until Creed II (2018), and the only film the pair are both featured in while married to one another in real life. The script was largely inspired by Stallone's original script for Beverly Hills Cop (1984).

Cobra was released to generally negative reviews with criticism on its excessive violence and overuse of genre tropes, but it was a box office success and also has since been considered as a cult classic.