text: The arena has hosted the 2013 EuroLeague Final Four between 10 and 12 May 2013.
  Ariana Grande was scheduled to perform on 25 and 26 May 2017 as part of her Dangerous Woman Tour, but the event was cancelled after the Manchester Arena bombing on 22 May. The event was not rescheduled. Grande, however, held five concerts at the arena for her Sweetener World Tour on 17, 19, and 20 August 2019 as well as 15 and 16 October 2019.
  On 30 November 2019, JoJo Siwa became the youngest person to perform in the O2 Arena at the age of 16, as part of her D.R.E.A.M. The Tour.
  On 14 May 2022, Little Mix held the final show of The Confetti Tour, called The Last Show (For Now) in the O2, which was their last show before their indefinite hiatus. Along with performing there live to 20,000 they also livestreamed the show live to millions for those who could not attend the tour.
  On 15 October 2022, the O2 hosted a boxing match between Claressa Shields and Savannah Marshall that was the first time two female boxers headlined at a major venue in the United Kingdom. Shields won, and the fight headlined the first all-female boxing card in the United Kingdom.