(T)error – stylized as (T)ERROR – is a 2015 American documentary film directed by Lyric R. Cabral and David Felix Sutcliffe. The film follows undercover FBI informant Saeed "Shariff" Torres as he engages in a sting operation targeting a Muslim man named Khalifah Ali Al-Akili as well as Tarik Shah. The film won the Special Jury Award for Breakout First Feature at the 2015 Sundance Film Festival, where it premiered.

It is the first documentary to follow an active FBI case while in progress. It is the first film for Cabral and the second for Sutcliffe. Sutcliffe said the film's intention was to show informants and their targets, and focus on the "decisions, tactics and objectives of counterterrorism cases."

The film aired on US television on the PBS series Independent Lens. The film was re-titled FBI Undercover when broadcast in the UK by the BBC as part of their Storyville TV series.

The story was also retold on This American Life.