Libby Larsen (born December 24, 1950, Wilmington, Delaware) is an American composer of contemporary classical music who lives in Minneapolis, Minnesota.
She grew up in Minnesota and completed undergraduate and graduate studies at the University of Minnesota in Minneapolis. In 1973, she became one of the founding members of the Minnesota Composers Forum, later renamed the American Composers Forum.
As her doctoral dissertation, Larsen composed Words Upon the Windowpane, a one-act opera based on a play of the same title by W. B. Yeats. It premiered at the University of Minnesota on June 1, 1977 under Vern Sutton, then director of the University's Opera Workshop. Later works include The Silver Fox (1979), Tumbledown Dick (1980), Clair de Lune (1984), Christina Romana, the opera Frankenstein: The Modern Prometheus (1990), and A Wrinkle in Time (1992). Geneva Concerts Presents: Syracuse Symphony Orchestra, 2002
Larsen has written a piece entitled Bach 358 as a commissioned work for the Barlow Bradford Musical endownment at Brigham Young University.
Most recently, Larsen adapted William Inge's play Picnic into a three-act opera that premiered in Aycock Auditorium at the University of North Carolina at Greensboro, on Thursday, April 2, 2009, starring students, staff, and alumni of the university.