ESL One Katowice 2015, also shortened as Katowice 2015, was the fifth Counter-Strike: Global Offensive Major Championship that was from March 12 to March 15, 2015 at the Spodek Arena in Katowice, Silesian Voivodeship, Poland. It was the first CS:GO Major of 2015. It was organized by Electronic Sports League with sponsorship from Valve. The tournament had a total prize pool of US$250,000. The defending champion was Team LDLC.com, whose players were now with Team EnVyUs.