Twin Peaks is an American mystery serial drama television series created by Mark Frost and David Lynch. It premiered on ABC on April 8, 1990, and ran for two seasons until its cancellation in 1991. The show returned in 2017 for a third season on Showtime.

The series follows an investigation, headed by FBI Special Agent Dale Cooper (Kyle MacLachlan) and local Sheriff Harry S. Truman (Michael Ontkean), into the murder of homecoming queen Laura Palmer (Sheryl Lee) in the fictional town of Twin Peaks, Washington. The show's narrative draws on elements of detective fiction, but its uncanny tone, supernatural elements, and campy, melodramatic portrayal of eccentric characters also draws from American soap opera and horror tropes. Like much of Lynch's work, it is distinguished by surrealism, offbeat humor, and distinctive cinematography. The musical score was composed by Angelo Badalamenti with Lynch.

The original run was followed by the 1992 feature film Twin Peaks: Fire Walk with Me, which serves as a prequel to the series. The success of the series sparked a media franchise, leading to the release of several tie-in books, including The Secret Diary of Laura Palmer. Under Lynch's direction, the show's 2017 revival included much of the original cast.

In the years following the first two seasons, the show has gained a devoted cult following and been referenced in a wide variety of media. Twin Peaks is often listed among the greatest television series and has received acclaim from critics and audiences. It is considered a landmark turning point in television drama. The 2017 revival also received widespread critical acclaim.