Espen Grjotheim (born 20 September 1976) is a Norwegian singer and actor from Grimstad, living in Oslo.
He was Norway's first Phantom in The Phantom of the Opera, and has played in productions of Mamma Mia, We Will Rock You, Chess, Les Misérables, Kristina från Duvemåla, Fame, Jesus Christ Superstar, La Cage Aux Folles, In shiny brass.
He portrayed Amy Winehouse in the theater concert 27 the club and played the role of Serge in Yasmina Reza's Art.
Grjotheim has also played in the show concerts We love ABBA and Store Norske, both at Edderkoppen Scene in Oslo.
In 2018, he received Broadway World's regional award for best actor in a musical, for his performance in The Phantom of the Opera.