One Love Manchester was a benefit concert and British television special on 4 June 2017, organised by American singer Ariana Grande, Simon Moran, Melvin Benn and Scooter Braun in response to the bombing after the singer's concert at Manchester Arena two weeks earlier. It took place at Old Trafford Cricket Ground, and was attended by 55,000 people. Guest stars included Justin Bieber, the Black Eyed Peas, Coldplay, Miley Cyrus, Mac Miller, Marcus Mumford, Niall Horan, Little Mix, Katy Perry, Take That, Imogen Heap, Victoria Monét, Pharrell Williams, Robbie Williams and Liam Gallagher.

Proceeds from the event went to the We Love Manchester Emergency Fund established by Manchester City Council and the British Red Cross to help the victims and their families. The British Red Cross received more than £10 million in donations in the 12 hours following the concert. Networks from at least 50 countries broadcast the concert live, which was simultaneously streamed live on various platforms, including Twitter, Facebook, and YouTube. New York's Vulture.com ranked the event as the No. 1 concert of 2017.