Accomplished singer/actor in numerous Broadway shows. He won a Best Actor (Musical) Tony Award in 1979 for "Sweeney Todd". He was also Tony-nominated in the same category in 1970 for "Applause," and in 1973 for "A Little Night Music," a role he recreated in the film version, A Little Night Music (1977).
New York City, New York, USA: An NYU Faculty Coach for workshops leading up to the 2011 National High School Musical Theater Awards. (June 2011)
Won a Canadian Genie Award for Best Actor in "One Man".
Len Cariou sang in both the NYC Broadway "What the World Needs Now" and the Broadway for Orlando on Maya & Marty singing to benefit the LGBT Center of Central Florida.
Member of the Theatre Hall of Fame.
He was awarded the 1985 Drama-Logue Award for Outstanding Performance for "Traveler in the Dark" at the Mark Taper Forum Theatre in Los Angeles, California. In 1998 the Drama-Logue Awards were replaced by the Back Stage West Garland Awards.,.
Performing in the CanStage production of "Frost/Nixon" at the Bluma Appel Theatre in Toronto. (October 2008)