Lydian is a calligraphic humanist sans-serif typeface designed by Warren Chappell for American Type Founders in 1938. It is available in bold, italic, and condensed, as well as in a Cursive variant. The original foundry font was commissioned and cast by American Type Founders, and included a stylistic alternate, a capital ‹A› with a cross bar. It was named after the designer's wife Lydia. It is famously used as the font for the end credits on the TV show Friends.