The 2021 LCS season is the fourth year of North America's League Championship Series, a professional esports league for the MOBA PC game League of Legends, under partnership and the eighth overall. The Lock In tournament began on January 15 and concluded on January 31. The spring regular season began on February 5 and concluded on March 14. The Mid-Season Showdown, which replaced the spring playoffs, began on March 20 and concluded on April 11. The summer regular season began on June 4 and will conclude on August 1.