"Letter Full of Tears" is a song written by American singer-songwriter Don Covay and released by Gladys Knight & the Pips as a single in November 1961. It became their second top-20 hit, peaking at number 19 on the Billboard Hot 100. The song was covered the following year by English singer Billy Fury who had a minor hit with it in the UK.

Gladys Knight & the Pips were an American R&B, soul, and funk family music group from Atlanta, Georgia, that remained active on the music charts and performing circuit for over three decades starting from the early 1950s.