Félix Lengyel, better known as xQc or by his former screenname xQcOW, is a Canadian Twitch streamer, internet personality, and former professional Overwatch player.

Lengyel began his esports career in 2016, while also regularly streaming. Most notably, he played for the Dallas Fuel in the Overwatch League's inaugural season, before being released midway through the season due to repeated controversy and suspensions, as well as for Team Canada in the Overwatch World Cup from 2017 to 2019.

After leaving competitive Overwatch, Lengyel focused on a full-time streaming career on Twitch, while being a content creator for organizations such as Sentinels and Luminosity Gaming. Although he has been temporarily banned multiple times on the platform, he was the most watched streamer on Twitch in both 2020 and 2021.