"Young Girl" is a song that was written, composed, and produced by Jerry Fuller and performed by Gary Puckett & The Union Gap and released in 1968.

It peaked at #1 in the UK and #2 in the US, being held off by Otis Reading's "Sitting On The Dock Of The Bay". 

In the UK, "Young Girl" was re-released in 1974 as a double A-sided single with "Woman, Woman". This re-release was part of a CBS Records series entitled "Hall of Fame Hits". As a result of the re-release, "Young Girl" enjoyed a second UK chart run, peaking at No. 6.

Darren Day recorded his version with Mike Stock and Matt Aitken in 1994 and the single peaked at #42.