"Killer" is a song by British DJ and record producer Adamski. It was written by Adamski and British singer-songwriter Seal, who also provided vocals. It was released in March 1990 by MCA Records as the first single from Adamski's second album, Doctor Adamski's Musical Pharmacy (1990), and reached number one on the UK Singles Chart. The single spent four weeks at the top in May and June 1990 and sold over 400,000 copies in the UK, earning it gold certification. It also reached number one in Belgium and Zimbabwe and number two in the Netherlands and West Germany.

Adam Paul Tinley, known professionally as Adamski, as well as Sonny Eriksson, is an English DJ, musician, singer and record producer, prominent at the time of acid house for his tracks "N-R-G" and "Killer", a collaboration with Seal, which was a No. 1 song in the UK in 1990.