"Ghostbusters" is a song written by American musician Ray Parker Jr. as the theme to the 1984 film Ghostbusters, and included on its soundtrack. Debuting at number 68 on June 16, 1984, the song peaked at No. 1 on the Billboard Hot 100 on August 11, staying there for three weeks, and at No. 2 on the UK Singles Chart on September 16, staying there for three weeks. The song reentered the UK Top 75 on November 2, 2008 at No. 49 and again on November 5, 2021, at No. 38.

Ray Erskine Parker Jr. is an American musician, singer, songwriter, and record producer. As a solo performer, he wrote and performed the theme song for the 1984 film Ghostbusters and also sounds from the animated series The Real Ghostbusters. Previously, Parker achieved a US top-5 hit in 1982 with "The Other Woman". He also performed with his band, Raydio, and with Barry White in the Love Unlimited Orchestra.