Stephen and Timothy Quay (born 17 June 1947 in Norristown, Pennsylvania), identical twin brothers better known as the Brothers Quay or Quay Brothers , are influential stop-motion animators.

They reside and work in England where they moved in the late 1960s (after studying illustration in Philadelphia) to study at the Royal College of Art where they made their first short films (which no longer exist after the only print was irreparably damaged). They spent some time in the Netherlands in the 1970s and then returned to England where they teamed up with another Royal College student, Keith Griffiths, who produced all of their films. The trio formed Koninck Studios in 1980, which is currently based in Southwark, south London.

The Quays' works (1979-present) show a wide range of often esoteric influences, starting with the Polish animators Walerian Borowczyk and Jan Lenica and continuing with the writers Franz Kafka, Bruno Schulz, Robert Walser and Michel de Ghelderode, puppeteers Wladyslaw Starewicz and Richard Teschner and composers Leoš Janáček, Zdeněk Liška and Leszek Jankowski, the last of whom has created many original scores for their work. Czech animator Jan Švankmajer, for whom they named one of their films (The Cabinet of Jan Švankmajer), is also frequently cited as a major influence, but they actually discovered his work relatively late, in 1983, by which time their characteristic style and preoccupations had been fully formed.