KSI

Digital Media Pioneer & YouTube Superstar; Chart-Topping Rapper; Co-Founder of Prime Hydration & Sidemen; Professional Boxer

London, UK
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KSI Biography

Olajide Olayinka Williams Olatunji, known professionally as KSI, is a British YouTuber, rapper, professional boxer, and entrepreneur recognized for his influence in digital media, music, and sports entertainment. KSI began his career by launching a YouTube channel focused on FIFA video game commentary, expanding his content to include vlogs, challenges, and music. His channels have amassed more than 41 million subscribers and 10 billion video views, establishing him as one of the United Kingdom's most subscribed creators.

KSI is a co-founding member of Sidemen, a British YouTube collective that developed into a multi-faceted entertainment brand. The group’s ventures include Sidemen Clothing, the restaurant chain Sides, and the vodka brand XIX Vodka. KSI also co-founded Prime Hydration with Logan Paul, a beverage brand that achieved global retail success and secured partnerships with major sports organizations. Additionally, he co-founded Misfits Boxing, a promotional company that contributed to the crossover between entertainment and sport.

KSI’s professional boxing career began with a victory over Joe Weller, followed by a widely viewed match against Logan Paul that ended in a majority draw. In their professional rematch at Staples Center in Los Angeles, KSI secured a split-decision win. He later defeated two opponents in a single night, including rapper Swarmz and professional boxer Luis Alcaraz Pineda, to claim the MFB cruiserweight title. KSI also faced Tommy Fury in a closely contested bout that he publicly disputed.

In the music industry, KSI released the studio albums "Dissimulation" and "All Over the Place," with the latter reaching number one on the UK Albums Chart. He has achieved multiple top-40 singles in the United Kingdom and received the Brit Billion Award for surpassing one billion music streams in the UK. Collaborations with artists such as Anne-Marie on "Don't Play" and Tom Grennan on "Not Over Yet" have contributed to his chart success, and he earned a BRIT Award nomination for "Thick of It" featuring Trippie Redd.

KSI has also appeared in film and television, starring in the comedy "Laid in America" and serving as the subject of the Amazon Prime Video documentary "KSI: In Real Life," executive produced by journalist Louis Theroux. He has been a guest judge on "Britain's Got Talent." KSI’s career spans content creation, music, sport, and business, illustrating the evolving role of digital-native talent in contemporary culture and commerce.

BOOK KSI

Speaker profile last updated by AAE Talent Team on 05/06/2026.

  • How do I book KSI to speak at my event?

    Our experienced booking agents have successfully helped clients around the world secure speakers like KSI for speaking engagements, personal appearances, product endorsements, or corporate entertainment since 2002. Click the Check Availability button above and complete the form on this page to check availability for KSI, or call our office at 1.800.698.2536 to discuss your upcoming event. One of our experienced agents will be happy to help you get speaking fee information and check availability for KSI or any other speaker of your choice.
  • What are the speaker fees for KSI

    Speaking fees for KSI, or any other speakers and celebrities, are determined based on a number of factors and may change without notice. The estimated fees to book KSI are available upon request for live events and available upon request for virtual events. For the most current speaking fee to hire KSI, click the Check Availability button above and complete the form on this page, or call our office at 1.800.698.2536 to speak directly with an experienced booking agent.
  • What topics does KSI speak about?

    KSI is a keynote speaker and industry expert whose speaking topics include Celebrity, Comedian, Gaming, Music, Social Media, Technology
  • Where does KSI travel from?

    KSI generally travels from London, UK, but can be booked for private corporate events, personal appearances, keynote speeches, or other performances. For more details, please contact an AAE Booking agent.
  • Who is KSI’s agent?

    AAE Speakers Bureau has successfully booked keynote speakers like KSI for clients worldwide since 2002. As a full-service speaker booking agency, we have access to virtually any speaker or celebrity in the world. Our agents are happy and able to submit an offer to the speaker or celebrity of your choice, letting you benefit from our reputation and long-standing relationships in the industry. Please click the Check Availability button above and complete the form on this page including the details of your event, or call our office at 1.800.698.2536, and one of our agents will assist you to book KSI for your next private or corporate function.
  • What is a full-service speaker booking agency?

    AAE Speakers Bureau is a full-service speaker booking agency, meaning we can completely manage the speaker’s or celebrity’s engagement with your organization from the time of booking your speaker through the event’s completion. We provide all of the services you need to host KSI or any other speaker of your choice, including offer negotiation, contractual assistance, accounting and billing, and event speaker travel and logistics services. When you book a speaker with us, we manage the process of hosting a speaker for you as an extension of your team. Our goal is to give our clients peace of mind and a best-in-class service experience when booking a speaker with us.
  • Why is AAE Speakers Bureau different from other booking agencies?

    If you’re looking for the best, unbiased speaker recommendations, paired with a top-notch customer service experience, you’re in the right place. At AAE Speakers Bureau, we exclusively represent the interests of our clients - professional organizations, companies, universities, and associations. We intentionally do not represent the speakers we feature or book. That is so we can present our clients with the broadest and best performing set of speaker options in the market today, and we can make these recommendations without any obligation to promote a specific speaker over another. This is why when our agents suggest a speaker for your event, you can be assured that they are of the highest quality with a history of proven success with our other clients.

KSI is a keynote speaker and industry expert who speaks on a wide range of topics. The estimated speaking fee range to book KSI for your event is available upon request. KSI generally travels from London, UK and can be booked for (private) corporate events, personal appearances, keynote speeches, or other performances. Similar motivational celebrity speakers are Logan Paul, Robert Downey Jr., MrBeast, Noel Miller and Mark Fischbach (Markiplier). Contact All American Speakers for ratings, reviews, videos and information on scheduling KSI for an upcoming live or virtual event.

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