- Britney Spears – vocals, composer, executive producer
- Klas Åhlund - composer, bass, bass guitar
- Marcella "Ms. Lago" Araica – composer, engineer, mixing, programming
- Jim Beanz – composer, vocal producer, background vocals
- Bloodshy & Avant – composer, producer, programming, background vocals, guitar, bass guitar, keyboards
- Jim Carauna – engineer
- Erik "Baby Jesus" Coomes – composer, bass, guitar, bass guitar
- Tom Coyne – mastering
- The Clutch – producer
- Kara DioGuardi – composer, producer, background vocals
- Corte Ellis – composer, background vocals
- David M. Erlich - production coordination
- Niklas Flyckt - mixing
- Fredwreck – composer, producer, guitar, keyboards
- Freescha - composer, producer
- Sean Garrett – composer, producer, background vocals
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- Brian Garten – engineer
- Mark Gray - assistant engineer
- Hart Gunther - assistant engineer
- Jeri Heiden - art direction, design
- Keri Hilson – composer, vocal producer, background vocals
- Nate "Danja" Hills – composer, producer
- Nick Huntington – composer
- Cara Bridgins Hutchinson - production coordination
- Ken "Duro" Ifill - engineer
- Henrik Jonback – composer, bass, guitar
- Ezekiel "Zeke" Lewis – composer, background vocals
- Mango – programming
- Tony Maserati – mixing
- Nicole Morier – composer, background vocals
- Balewa Muhammad – composer
- Jackie Murphy - art direction, design
- Glen Nakasako - art direction, design
- Candice Nelson – composer, background vocals
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- The Neptunes – producer, audio engineer, mixing, background vocals
- Brian Paturalski – engineer
- Robyn – background vocals
- Rob Skipworth - assistant engineer
- Mike Snow - assistant engineer
- Patrick Smith – composer
- Britney Spears – vocals, composer, executive producer
- T-Pain - composer, background vocals
- Ron Taylor - editing
- Francesca Tolot - make-up
- Ellen von Unwerth - photography
- Windy Wagner – background vocals
- Miles Walker - engineer
- Theresa LaBarbera Whites - A&R
- Patti Wilson - stylist
- Jordan "DJ Swivel" Young - engineer
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