"Calendar Girl" is a song by Neil Sedaka. The music was composed by Sedaka and the lyrics by Howard Greenfield. Released in December 1960 as a single, it was a hit single for Sedaka, peaking at No. 4 on the US charts, No. 3 in Australia, and No. 1 on the Canadian and Japanese charts.

Neil Sedaka is an American singer, songwriter and pianist. Since his music career began in 1957, he has sold millions of records worldwide and has written or co-written over 500 songs for himself and other artists, collaborating mostly with lyricists Howard "Howie" Greenfield and Phil Cody.