Alfred Giovanni Roncalli Boe (born 29 September 1973) is an English actor and singer who performs primarily in musical theatre.

He is best known for his performances as Jean Valjean in the musical Les Misérables at the Queen's Theatre in London, the 25th Anniversary Concert, the 2014 Broadway revival, the All-Star Staged Concert, and is set to reprise the role in the Arena Spectacular World Tour. He played the lead role in Finding Neverland on Broadway beginning 29 March 2016. Boe shared a Tony Award with the other members of the ensemble cast of Baz Luhrmann's 2002 revival of La bohème in 2003. He has sold more than one million albums in the United Kingdom.

One of his most recent performances include Together in Vegas (with Michael Ball). In October 2022 he announced that he would be doing a solo tour in 2023.