Prentice John Delaney Jr. (January 8, 1945 – April 13, 2003), better known as Sean Delaney, was an American musician, producer, road manager and songwriter, best known for his work with the rock band KISS from the early 1970s until the early 1980s. He is largely credited with developing their choreography onstage, and co-wrote many songs with Paul Stanley, including "Mr. Speed", "Makin' Love", and "Take Me" from the 1976 album Rock and Roll Over, and "All American Man" from the studio side of the 1977 album Alive II.
He also co-wrote the song "Rocket Ride" with Ace Frehley for the same album, a song that remained a staple of Frehley's live set throughout his solo career and was used as the title of his 2008 tour. He simultaneously produced and co-wrote songs for Gene Simmons' and Peter Criss' 1978 self-titled solo albums. He's co-written songs with each original member of KISS. He is often referred to by fans and those close to the band as "the fifth member of KISS."