
Roberto Agustin Trujillo (Spanish pronunciation: [roˈβerto tɾuˈxiʎo]; born October 23, 1964), better known as Robert Trujillo, is an American musician known for his role as the current bassist of heavy metal band Metallica. He also was a member of crossover thrash metal band Suicidal Tendencies, funk metal supergroup Infectious Grooves, heavy metal band Black Label Society, and he has worked with Jerry Cantrell from the grunge band Alice in Chains, and Black Sabbath vocalist Ozzy Osbourne.

Encino Man
1992 · as Infectious Grooves

The Darwin Awards
2007 · as Self

Metallica: Through the Never
2013 · as Self

Scout's Honor
1980 · as Boy Scout #1

Ozzy: No Escape from Now
2025 · as Self

House Calls
1978 · as Mexican Boy

Lennon or McCartney
2014 · as Self

Metallica: Some Kind of Monster
2004 · as Self

Metallica and San Francisco Symphony: S&M2
2019 · as Self

Lemmy
2010 · as Self

Linkin Park and Friends Celebrate Life in Honor of Chester Bennington
2017 · as Self (archive footage)

Metallica: 40th Anniversary - Live at Chase Center (Night 1)
2021 · as bass, vocals

Back to the Beginning: Ozzy's Final Bow
2025 · as Self

Metallica: The Videos 1989-2004
2006 · as Bassist

God Bless Ozzy Osbourne
2011 · as Self

Mission to Lars
2015 · as Self

Metallica Saved My Life
2025 · as Self

The Big Four: Live in Sofia
2010 · as Bass