"The Letter" is a song written by Wayne Carson that was first recorded by the American rock band the Box Tops in 1967. It was the group's first and most successful single, reaching number one on the record charts in the United States and Canada. It was also an international success and placed in the top ten in several other countries.

The Box Tops is an American rock band formed in Memphis, Tennessee, in 1967. They are best known for the hits "The Letter", "Cry Like a Baby", "Choo Choo Train," and "Soul Deep" and are considered a major blue-eyed soul group of the period. They performed a mixture of current soul music songs by artists such as James & Bobby Purify and Clifford Curry; pop tunes such as "A Whiter Shade of Pale" by Procol Harum; and songs written by their producers, Dan Penn, Spooner Oldham, and Chips Moman. Vocalist Alex Chilton went on to front the power pop band Big Star and to launch a career as a solo artist, during which he occasionally performed songs he had sung with the Box Tops.