| 2015 NA LCS season | |
| League: | NA LCS |
| Sport: | League of Legends |
| No Of Teams: | 10 |
| Tv: | Twitch |
| Season: | Spring |
| Top Seed: | Team SoloMid |
| Mvp: | Søren "Bjergsen" Bjerg[1] (Team SoloMid) |
| Season Champ Name: | Champions |
| Season Champs: | Team SoloMid |
| Second Place: | Cloud9 |
| Season2: | Summer |
| Top Seed2: | Team Liquid |
| Mvp2: | Lee "Rush" Yoon-jae (Team Impulse) |
| Season Champ2 Name: | Champions |
| Season Champs2: | Counter Logic Gaming |
| Second Place2: | Team SoloMid |
| Season3: | Regional finals |
| Season Champ3 Name: | Winner |
| Season Champs3: | Cloud9 |
| Seasonslistnames: | NA LCS |
| Prevseason Link: | 2014 NA LCS season |
| Prevseason Year: | 2014 |
| Nextseason Link: | 2016 NA LCS season |
| Nextseason Year: | 2016 |
The 2015 NA LCS season was the third year of the North American League of Legends Championship Series. It saw an expansion of the league from eight to ten teams, as well as the introduction of championship points and the regional finals gauntlet to better determine which teams should qualify for the World Championship. The season was divided into spring and summer splits, each consisting of a regular season and playoff stage. The top six teams from the regular season advanced to the playoff stage, with the top two teams receiving a bye to the semifinals. Regular season games and the spring playoffs were played in the Riot Games Studios in Los Angeles, California, while the summer finals were held at Madison Square Garden.
The spring split began on January 24 and concluded with Team SoloMid winning their third NA LCS title on April 19, with a roster consisting of Dyrus, Santorin, Bjergsen, WildTurtle and Lustboy.[2]
The summer split began on May 30 and concluded with Counter Logic Gaming winning their first NA LCS title on August 23, with a roster consisting of ZionSpartan, Xmithie, Pobelter, Huhi, Doublelift and Aphromoo.[3]
The three teams that qualified for the 2015 World Championship were Counter Logic Gaming, Team SoloMid, and Cloud9.