- Brian Banks – keyboards, synthesizers, programming
- Michael Boddicker – keyboards, synthesizers
- N'dugu Chancler – drums
- Paulinho da Costa – percussion
- David Foster – keyboards, synthesizers
- Gary Grant – trumpet and flügelhorn
- Eddie Van Halen – guitar solo on "Beat It"
- Jerry Hey – trumpet and flügelhorn
- Michael Jackson – co-producer, lead and background vocals, drum case beater, bathroom stomp board, vocal, drum, horn and string arrangement
- Paul Jackson – guitar
- Louis Johnson – bass guitar
- Quincy Jones – producer
- Steve Lukather – guitar, bass guitar
- Anthony Marinelli – synthesizer programming
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- Paul McCartney – vocals on "The Girl Is Mine"
- David Paich – keyboards, synthesizers, programming
- Dean Parks – guitar
- Greg Phillinganes – keyboards, synthesizers, programming
- Jeff Porcaro – drums, horn and string arrangements
- Steve Porcaro – keyboards, synthesizers, programming
- Vincent Price – voice-over on "Thriller"
- Bill Reichenbach – trombone
- Bruce Swedien – recording engineer, mixer
- Rod Temperton – keyboards, synthesizers
- David Williams – guitar
- Larry Williams – saxophone and flute
- Bill Wolfer – keyboards, synthesizers
- La Toya Jackson – background vocals on "PYT"
- Janet Jackson – background vocals on "PYT"
- Greg Smith - synthesizers
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