The 2012 StarCraft II World Championship Series (WCS) is part of the Battle.net World Championship Series, a series of video game tournaments held by Blizzard Entertainment, the creators of the video game StarCraft II (SC2). Tournaments were held in more than 28 countries to find top StarCraft II competitors. The top-ranked players from each continent were then invited to compete in the Global Finals in Shanghai, China. Korean player Won "PartinG" Lee-Sak emerged victorious in the final match against Jang "Creator" Hyun Woo, with third place going to Jung "Rain" Yoon Jong.

Won Lee-sak, (Korean: 원이삭) better known by his in-game name PartinG, is a South Korean StarCraft II Protoss player. He was the winner of the 2012 StarCraft II World Championship Series. He has played for yoe Flash Wolves, SK Telecom T1, and Team Player 1.