Len Cariou

Leonard Joseph Cariou (; born September 30, 1939) is a Canadian actor, singer, and theatre director. He gained prominence for his portrayal of Sweeney Todd in the original cast of Stephen Sondheim's musical Sweeney Todd: The Demon Barber of Fleet Street (1979) alongside Angela Lansbury for which he won the Tony Award for Best Actor in a Musical. He also received Tony nominations for his roles in the Betty Comden and Adolph Green musical Applause (1970) and the Sondheim musical A Little Night Music (1973).

Cariou is also known for his film roles in A Little Night Music (1977), The Four Seasons (1981), Thirteen Days (2000), About Schmidt (2002), Boynton Beach Club (2005), Flags of Our Fathers (2006), Prisoners (2013), and Spotlight (2015). He portrayed Franklin D. Roosevelt in the HBO film Into the Storm (2009) for which he received a nomination for the Primetime Emmy Award for Outstanding Supporting Actor in a Limited Series or Movie. He also is known for his recurring television roles in Murder, She Wrote (1985–1992), Brotherhood (2005–2006), and Damages (2010). From 2010 to 2024, he co-starred as the patriarch Henry Reagan, NYPD Police Commissioner (retired), in the multi-generational CBS series Blue Bloods, a role he reprised in Boston Blue in 2026.