‘Team Anthony Nolan’ will comprise bone marrow transplant recipients and donors.
The sponsorship move comes as the charity positions itself as a blood cancer charity with a focus on improving quality of life for people following a transplant, as well as finding donors.
The Games, which have been running since 1978, will be held between 30 July and 2 August in Newcastle and Gateshead and involve a series of Olympic-style events, including badminton, cycling and a mini-marathon.
Henny Braund, chief executive of Anthony Nolan, said: "We are very proud to partner with the British Transplant Games 2015. The Games will be a chance to celebrate life after transplant and the second chance that their donor has given them."