"Hammerhead" is the second single from Australian rock musician James Reyne’s debut self-titled solo studio album, released in 1987.

The track featured uncredited backing vocals by Olivia Newton-John.

[1] Reyne reflected on the song saying: ""Hammerhead" was not necessarily about me, but let's say I thought I knew what I was talking about.

I shouldn't make too much about the fact that it's about drugs.

It was an exercise in trying to write a song about that subject but to also make it that it could be about a relationship.