(b.September 30, 1939 Winnipeg, Manitoba, Canada) Canadian actor.

Actor best known for his role as Sweeney Todd in the original 1979 production of the Stephen Sondheim musical: Sweeney Todd: The Demon Barber Of Fleet Street.

Born on the 30th of September, 1939, in Canada, Len has also had appearances onstage in the musicals Applause (1970), A Little Night Music (1973) , and recently, in the Tony Award winning play Proof with Anne Heche, Mary-Louise Parker, and Jennifer Jason Lee . On film, Cariou can be seen in About Schmidt (2002), Thirteen Days (2000), Lady In White (1988), and also in television appearances such as The West Wing, Law And Order , The Practice and Murder She Wrote.