Overwatch Apex, or simply Apex, was a competitive esports tournament series in South Korea for the video game Overwatch run by South Korean cable television channel OnGameNet (OGN) from 2016 to 2017. The tournament was contested mostly by South Korean teams, although several Western teams were invited to compete throughout most of its seasons. After four seasons, Apex was expected to continue operations as Overwatch Contenders Korea, but after Blizzard Entertainment, the owners of the Contenders, opted to use a different broadcaster for the Korean Contenders league, OGN shut down the Apex series.

Overwatch is a multimedia franchise centered on a series of online multiplayer first-person shooter (FPS) video games developed by Blizzard Entertainment. Overwatch was released in 2016, and Overwatch 2 was released in 2022. Both games feature hero-based combat between two teams of players vying over various objectives, along with other traditional gameplay modes.