KSI Biography: Age, Net Worth, Real Name, Height, Boxing Records, Girlfriend, Parents & Siblings

Basic Information

Stage Name: KSI
Real Name: Olajide Olayinka Williams Olatunji
Occupation: YouTuber, Rapper, Songwriter, Boxer, Actor
Date Of Birth/Age: June 19, 1993 (29 Years Old
Place of Birth: London, England
Gender: Male
Nationality: British
Marital Status:


Olajide Olayinka Williams “JJ” Olatunji, professionally known as KSI, is an English YouTuber, rapper, songwriter, boxer, and actor. Olatunji is a co-founder and member of the British group known as the Sidemen. He is also the CEO of Misfits Boxing and co-owns Prime energy drink, XIX Vodka, and a restaurant chain known as Sides.


Olajide Olayinka Williams “JJ” Olatunji was born in London, England, on June 19, 1993. He was raised in Watford, Hertfordshire. He celebrated his 29th birthday on June 19, 2023.

Source: Instagram @ksi

Net Worth

According to Wealthy Gorilla, KSI has an estimated net worth of $25 million. He is reported to have made a massive income from his boxing match in early 2023 and from sales of his Prime energy drink.

Real Name

KSI’s real name is Olajide Olayinka Williams “JJ” Olatunji.


KSI is 183 cm tall, 6 ft 0 in.

Boxing Records

In November 2019, KSI won Logan Paul after six rounds (Professional). He has three exhibition wins and zero losses. On the amateur front, KSI has one win and one draw in two matches.


As of February 2023, KSI is single. He was rumoured to have dated singer Anne Marie, but the two put the rumors to rest. Years ago, he was in a relationship with Seana Cuthbert. The pair dated since high school but ended their relationship in 2014. She appeared in several of his videos during his rise to fame.

KSI with Seana Cuthbert


KSI’s father is Jide Adamulla Olatunji. He hails from Ibadan, Nigeria, while his mother, Yinka Atinuke, is from Islington, London.

In the 2018 Christmas period, he revealed that he got kicked out of his house by his brother, and his parents let it happen. He said, “Kicked out the house. Bro says he owns the house. Said he’ll call the police if I stay. My parents just look by and allow it lol. This sh*t is fu**ed man. After all the years of helping this boy. Just sad. Whatever. You do you fam.”


KSI has a younger brother, Deji Olatunji, who is also a YouTuber. In 2015, the brothers were ranked first and second, respectively, as the “UK’s Most Influential Creators” by Tubular Labs.

KSI and Deji are also known for their beef. The former announced in 2018 that his brother kicked him out of the house because he owned it. Deji responded to the claims by saying, “You always play the victim card and just manipulate your fans to hate me. You’re nothing but a bully, who thinks he’s always right. Merry Christmas.”

The back-and-forth between the brothers explained the situation. Deji said, “I told you to leave my house because you threatened to smash my computer and kick down my door. You wanted me to delete my videos when you told me I could upload it. You came home to argue. Stop playing the victim.”

KSI replied, “I told you to delete the videos about ME. I wanted to squash this beef, but you said the videos you made cost you money. I said I’ll reimburse you and you said no, you want those videos up because of your time and the views. All you care about is the views.”

Keep making videos on me. I know you need it. You’ve trapped our parents because if they speak against you, you’ll just threaten them since you own the house.” – KSI

To which Deji replied, “You’re nothing but a manipulative piece of sh*t. You’re no brother. You say to keep it private, but you’re publicly tweeting.”

The brothers ended the beef a while later and went back to celebrating each other’s wins online.

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