Letterbox (disambiguation)

A letter box is a receptacle for receiving mail.

Letterbox may also refer to:

• Distribution of advertising mail by letter box drop
• Letterboxing (filming), the practice of transferring film shot in a widescreen aspect ratio to standard-width, resulting in a letterbox
• Letterboxing (hobby), outdoor orienteering game
• Letter Box (game show), a 1962 Australian game show
• "Letterbox", a song by They Might Be Giants from their 1990 album Flood
• Letterbox, a 2017 album by Marie Miller
• Letterboxing, a method which mitigates Internet tracking by screen size