Igor Graziano Cavalera (born 4 September 1970) is a Brazilian musician, best known as the former drummer for the heavy metal band Sepultura, which he co-founded with his brother Max in 1984.

Cavalera is one half of DJ duo Mixhell, a project he founded with his wife Laima Leyton.

In 2016, Soulwax introduced a new live show entitled "Soulwax Transient Program For Drums And Machinery", for which the new line up included Cavalera as one of three drummers (along with Victoria Smith and Blake Davies) as well as Igor's wife Laima Leyton (of Mixhell) on synths and backing vocals.

He also served as a live musician for parodic heavy metal band Massacration under the pseudonym "El Covero" throughout 2004.

On 13 January 2006, it was announced that he was taking a break from the band due to the birth of his fourth child, initially leaving Sepultura temporarily.

In 2018, he formed the noise music duo Pet Brick with Wayne Adams of Big Lad and Death Pedals.

Cavalera cites drummers Roger Taylor, Bill Ward, Dave Lombardo, Stewart Copeland and Mike Bordin among his major influences.

Throughout his career, Cavalera has been widely recognized as a hard-hitting drummer (acknowledged by producer Scott Burns during the recording of Beneath the Remains).

In later years, Cavalera adopted a drumset conformation with upright toms and fewer cymbals, as seen in Live in São Paulo.