Instrument is a documentary film directed by Jem Cohen about the band Fugazi. Cohen's relationship with band member Ian MacKaye extends back to the 1970s when the two met in high school in Washington, D.C.. The film takes its title from the Fugazi song of the same name, from their 1993 album, In on the Kill Taker.

Editing of the film was done by both Cohen and the members of the band over the course of five years. It was shot from 1987 through 1998 on super 8, 16mm and video and is composed mainly of footage of concerts, interviews with the band members, practices, tours and time spent in the studio recording their 1995 album, Red Medicine.

The film also includes portraits of fans as well as interviews with them at various Fugazi shows around the United States throughout the years. The Instrument Soundtrack by Fugazi was released in conjunction with the film. It consisted primarily of instrumental and unreleased songs (including many demo cuts from End Hits, their next album after the soundtrack).

When asked what the goal was in making Instrument, Cohen responded:
I did feel that there were a lot of people that either didn't have access to the band or had something of a misconception of what they were like. I wanted to address those issues to some degree, but what I really wanted to do was just capture music-making and try to make something that felt, visually, like music, and something where the music was inextricably tied in with the moving pictures.

One such misconception is shared in a scene where drummer Brendan Canty tells his bandmates how his sister's boyfriend believes that Fugazi lives in a house together without heat and subsisting on a steady diet of nothing but rice. Cohen has also said that "[o]ne of the reasons why I work with Fugazi and they work with me is that we enjoy traveling through this madness. It's what they write songs about and it's what I try to document in my films."
Some notable scenes in the film include Fugazi performing for inmates at Lorton Correctional Facility; singer/guitarist Guy Picciotto's hilarious and astounding performance in a Philadelphia college gym in 1988, where he literally stuffs himself through a basketball hoop and performs hanging upside down by his legs; and an interview of Guy Picciotto and Ian MacKaye by an 8th grade girl for a Public-access television cable TV show.