"Obsession" is a 1983 song by Holly Knight and Michael Des Barres, covered in 1984 by American synth-pop band Animotion. The song hit number six in the United States, and number five in the United Kingdom in June 1985, helped by a distinctive video that MTV played frequently. "Obsession" also hit the top 40 on the US dance chart, twice: once in 1984 ; then in 1986, as a double-sided hit, along with the track "I Engineer".

Holly Knight is an American songwriter, musician, and singer. She was a member of the 1980s pop rock groups Spider and Device, and wrote or co-wrote several hit singles for other artists, such as "Rag Doll", "Obsession", "Love Is a Battlefield", "The Best", "Invincible", "Better Be Good to Me", "The Warrior", and "Change".