Ratso

Ratso may refer to:


 * "Ratso" Rizzo, a main character in the film Midnight Cowboy and the novel on which it is based
 * nickname of John Hiller (born 1943), Canadian former Major League Baseball relief pitcher
 * nickname of Larry Sloman, American author best known for his collaboration with Howard Stern
 * Ratso, a character on the 2000-2005 American animated TV show Jackie Chan Adventures
 * Ratso, a character on the 1988-1989 anime Wowser
 * Ratso the Rat, a character on the 1981 Saturday morning cartoon The Kwicky Koala Show
 * Ratso, a character on the 1970-1971 American animated TV show Groovie Goolies
 * Ratso, a character in The Brave Little Toaster to the Rescue and The Brave Little Toaster Goes to Mars