kt Rolster is a South Korean multi-gaming organization founded in 1999 with Korea Telecom as its head sponsor. A member of the Korean e-Sports Association, KT Rolster holds one of the richest and most successful StarCraft teams in the world, as well as one of the most successful League of Legends teams in Korea. The StarCraft team has fielded several legendary players throughout the pro-gaming scenes of StarCraft: Brood War and StarCraft II, such as Flash, Nal rA, YellOw, NaDa, NesTea, Reach, Life, TY and Zest.

KT Corporation, formerly Korea Telecom, is a South Korean telecommunications company. KT is the second-largest wireless carrier in South Korea, with 16.493 million subscribers as of Q4 2017.