"Rosalyn" is a song by British rhythm and blues band The Pretty Things. It was released as their first single in 1964 and charted at number 41 in the United Kingdom.
"Rosalyn" was written by songwriter Jimmy Duncan, who was also co-manager of the Pretty Things with Bryan Morrison at the time.
David Bowie recorded "Rosalyn" and released it on his album Pin Ups. It was released as a single by RCA in New Zealand in November 1973 instead of "Sorrow", which was released in the rest of the world. The B-side was "Where Have All the Good Times Gone", another cover from Pin Ups.