Deji Olatunji
British YouTuber
德吉·奥拉顿吉 · デジ・オラトゥンジ
- Born
- 9 December 1996, Watford
- Citizenship
- United Kingdom
- Sport
- boxing
- Occupation
- YouTuber, boxer
Olajide Olayinka Williams "JJ" Olatunji ( born 19 June 1993), known professionally as KSI, is a British YouTuber, influencer, musician, and former professional boxer. He is a co-founder and former member of YouTube group the Sidemen, the co-founder of Misfits Boxing and co-owner of several businesses, including Prime Hydration and Lunchly. KSI has also served as a judge on Britain's Got Talent since 2025. His main YouTube channel has over 19.2 million subscribers.
External links
Facts from Wikidata Q18147675 (CC0); quoted introduction from English Wikipedia (CC BY-SA 4.0). Data retrieved 2026-10-22.
Data: Wikidata (CC0 1.0); Wikipedia (English) (CC BY-SA 4.0). Retrieved 2026-10-22.