Heather Menzies Urich was a Canadian actress. She was known for her roles as Louisa von Trapp in the 1965 film The Sound of Music and Jessica 6 in the TV series Logan's Run.

The Sound of Music is a 1965 American musical drama film produced and directed by Robert Wise from a screenplay written by Ernest Lehman, and starring Julie Andrews and Christopher Plummer, with Richard Haydn, Peggy Wood, Charmian Carr, and Eleanor Parker. The film is an adaptation of the 1959 stage musical composed by Richard Rodgers, with lyrics by Oscar Hammerstein II and a book by Lindsay and Crouse. It is based on the 1949 memoir The Story of the Trapp Family Singers by Maria von Trapp and is set in Salzburg, Austria. It is a fictional retelling of her experiences as governess to seven children, her eventual marriage with their father Captain Georg von Trapp, and their escape during the Anschluss in 1938.