Olajide Olayinka Williams Olatunji, widely known as KSI, is a British YouTuber, rapper, boxer, and entrepreneur who has made a significant impact on the digital landscape. Born on June 19, 1993, in Milton Keynes, England, KSI initially gained fame through his YouTube channel, where he shared engaging gaming content, particularly FIFA videos. Over time, he has diversified his career into music, boxing, and business ventures, solidifying his position as one of the most influential figures in the entertainment industry.
Profile Summary
| Full Name | Olajide Olayinka Williams Olatunji |
| Date of Birth | June 19, 1993 |
| Place of Birth | Milton Keynes, England |
| Nationality | British |
| Spouse | Not married |
| Children | None |
| Occupations | YouTuber, Rapper, Boxer, Entrepreneur |
| Net Worth | Estimated $100 million |
| Awards | YouTube Creator Awards, Global Awards |
Early Life and Education
KSI was born into a Nigerian-British family. His father, Jide Olatunji, is from Nigeria, while his mother, Yinka Olatunji, is of London descent. He has a younger brother, Deji Olatunji, who is also a popular YouTuber.
KSI attended Berkhamsted School in Hertfordshire but decided to leave formal education early to focus on his YouTube career. Despite this unconventional path, he has built a multifaceted career that spans entertainment and business.
Career
KSI’s journey began in 2008 when he started uploading gaming commentary videos on YouTube. His content quickly attracted a large following.
By 2013, he co-founded the popular YouTube group Sidemen, which produces challenges, sketches, and gaming-related content. The Sidemen have become one of the most successful YouTube collectives globally.
In addition to his YouTube success, KSI ventured into music in 2015. His debut studio album Dissimulation (2020) debuted at number two on the UK Albums Chart and became the best-selling debut album by a British artist that year.
He followed it with All Over the Place (2021), which topped the UK Albums Chart. KSI has collaborated with artists such as Offset, Anne-Marie, and Craig David.
KSI also made headlines as a boxer. He debuted in 2018 with an amateur match against Joe Weller and later fought high-profile bouts against Logan Paul. These matches helped popularize influencer boxing and contributed significantly to his global fame.
In business, KSI co-founded Prime Hydration with Logan Paul in 2022. The brand quickly became successful and was named the official hydration partner of Arsenal F.C., further cementing KSI’s status as an entrepreneur.
Personal Life
KSI has kept his personal life private but has confirmed that he is in a long-term relationship with a mystery girlfriend whose identity remains undisclosed.
He previously dated Seana Cuthbert during the early stages of his career but ended the relationship in 2014 due to time constraints caused by his growing career.
Net Worth
As of 2025, KSI’s net worth is estimated to be around $100 million. His wealth comes from multiple revenue streams, including YouTube ad revenue, music sales, boxing matches, sponsorships, and business ventures like Prime Hydration.
Discography
Studio Albums
- Dissimulation (2020)
- All Over the Place (2021)
Collaborative Albums
- New Age (2019) – with Randolph
Notable Singles
- “Creature” (2017)
- “Uncontrollable” featuring Big Zuu (2018)
- “Lighter” with Nathan Dawe (2020)
- “Holiday” (2021)
- “Not Over Yet” featuring Tom Grennan (2022)
Bibliography
- KSI: I Am a Bellend (2015) – A comedic autobiography detailing KSI’s rise to fame on YouTube.
Awards and Nominations
- NME Awards: Best Collaboration for “Lighter” (2021) – Nominated
- Brit Awards: Song of the Year for “Holiday” (2022) – Nominated
- YouTube Creator Awards: Diamond Play Button for surpassing 10 million subscribers
- Global Awards: Best Social Media Star (2021) – Won
