1975 in heavy metal music

This is a timeline documenting the events of heavy metal in the year 1975.

Bands formed

 * Angel
 * The Babys
 * Boston
 * Bow Wow
 * Crack the Sky
 * Goddo
 * Ian Gillan Band
 * Iris
 * Iron Maiden
 * Jameson Raid
 * Legs Diamond
 * Lone Star
 * Motörhead (as Bastard)
 * Paris
 * Rainbow
 * Quiet Riot
 * Riot
 * Saxon (as Son of a Bitch)
 * Starz
 * Ted Nugent
 * The Runaways
 * Triumph
 * White Spirit
 * White Wolf
 * Zebra

Bands reformed

 * Van der Graaf Generator

Bands disbanded

 * Alice Cooper (band)
 * Coven
 * Elf
 * Humble Pie
 * The Guess Who
 * Warpig

Events

 * Motörhead parted ways with original drummer Lucas Fox. He was replaced by Phil "Philthy Animal" Taylor.
 * Ritchie Blackmore left Deep Purple due to dissatisfaction with the band's musical direction, marking the end of the band's Mark III era. He was replaced by Tommy Bolin.

Deaths

 * February 10 – David Michael "Dave" Alexander, original bassist of The Stooges, died from pulmonary edema at the age of 27.
 * December 8 – Gary Mervin Thain, former Uriah Heep bassist, died from respiratory failure due to a heroin overdose at the age of 27.

Albums

 * Moxy – Moxy