He was voted Personality of the year at the TV Quick awards in London, England, UK. [4 September 2000]

Studied History at Christ's College, Cambridge

Engaged to Australian actress Isla Fisher.

In contrast to his characters, he is a soft-spoken, gentlemanly Cambridge man who considered pursuing a PhD before going into comedy.

He plays three principal characters on "Da Ali G Show" (2003). The title character is Ali G, a lower-class white male who acts like a Jamaican Londoner and enrages his politically active and powerful guests with stupid questions. Another one is the Khazakstani TV reporter Borat, who naïvely searches for porn and outlets for his scatological, accidental humor and anti-Semitism. The last one is the superficial Austrian fashion-expert Brüno, who often talks up heartless fashionistas and makes macho men uncomfortable with his blatant homosexuality.

Gave 2004 Harvard class day address in character as Ali G.

Cohen appears on talk shows in character; he has rarely appeared as his real self. However, with the release of Borat: Cultural Learnings of America for Make Benefit Glorious Nation of Kazakhstan (2006), he will only appear in character.

His cousin, Simon Baron Cohen, is a preeminent psychologist who became famous for his theory that autism is caused by an extreme male brain.

Went to Haberdashers' Aske's School for Boys in Hertfordshire, the same school as "Little Britain" (2003) star Matt Lucas, comedian David Baddiel, and former Formula 1 champion Damon Hill.

For Borat, Sacha takes about 6 weeks to grow body, head and facial hair. For Ali G., the facial hair takes about 4 weeks to grow. When preparing for Bruno, he shaves all of his hair (including body hair) and works out and cleans his body vigorously.

During an "All Things Considered" interview in 2004, Baron Cohen told NPR's Robert Siegel that he wrote his Cambridge thesis on Jewish involvement in the American Civil Rights movement, focusing especially on the 1964 murders of James Chaney, Andrew Goodman, and Michael Schwerner in Philadelphia, Mississippi.

Brother of Erran Baron Cohen, a member of the British electronica world-music group Zöhar.