Seinfeld was a television show.
Cosmo Kramer , usually referred to as simply `` Kramer '' , is a fictional character on the American television sitcom Seinfeld ( 1989 -- 1998 ) , played by Michael Richards . Jerome `` Jerry '' Seinfeld is the protagonist of the American television sitcom Seinfeld ( 1989 -- 1998 ) . Larry Charles . Charles is best known as a staff writer for the American sitcom Seinfeld for its first five seasons , contributing some of the show 's darkest and most absurd storylines . Seinfeld . It was created by Larry David and Jerry Seinfeld , the latter starring as a fictionalized version of himself .