KSI
Personal Info
Known for
Acting
Gender
Male
Birthday
1993-06-19 (31 years old)
Place of Birth
Watford, England, UK
KSI
Biography
Olajide Olayinka Williams "JJ" Olatunji, known online as KSI, is a British YouTuber, internet personality and rapper known for his YouTube video content. Olatunji is a member and co-founder of the entertainment collective known as the Sidemen, alongside six other British YouTubers, producing online videos and merchanise to a combined audience of over 53 million followers.
Known For
Acting
KSI vs. Dillon Danis
as Self
(2025)
Sidemen Scavenger Hunt
as KSI
(2025)
Airport Roulette
as KSI
(2025)
(2025)
$100k YouTuber Presents
as KSI
(2025)
Race Across An Island
as KSI
(2025)
(2024)
The Sidemen Story
as Self
(2023)
Untold: Jake Paul the Problem Child
as Self (archive footage)
(2023)
WWE WrestleMania 39: Saturday
as KSI (Ringside)
(2023)
KSI & The Pauls: Primed for Success
as Himself
(2023)
KSI: In Real Life
as Self
(2023)
INSIDE: Narrative of Our Journey
as Archive Footage
(2023)
KSI vs. Joe Fournier
as Self
(2023)
KSI vs. Tommy Fury
as Self
(2023)
(2023)
KSI vs. FaZe Temperrr
as Self
(2022)
KSI vs. Swarmz
as Self
(2021)
The KSI Show
as KSI
(2019)
KSI vs. Logan Paul 2
as Self
(2018)
KSI: Can't Lose
as Self
(2018)
KSI vs. Logan Paul
as Self
(2018)
KSI vs. Weller Live at the Copper Box Arena
as Himself (as KSI)
(2018)
Joe Weller: Fighter
as Himself
(2016)
Laid in America
as Duncan
(2015)
Crew
(2021)
The KSI Show
Songs, Writer
(2018)
KSI vs. Logan Paul
Director
(2018)
(2017)
Baywatch
Songs