Candela Obscura is the name of both an American actual play web series and its spinoff tabletop role-playing game system.

The Candela Obscura show is a horror anthology series in which actors play a tabletop role-playing game of the same name. It was created by Taliesin Jaffe and Chris Lockey, directed by Steve Failows and produced by Failows and Maxwell James for Critical Role Productions. It is Critical Role's first series to use a game and a system owned by the company. Over the course of a few episodes, different casts of characters join the secret order Candela Obscura and form a circle to investigate several supernatural phenomena, guided by a Lightkeeper. The chapters of Candela Obscura are mostly conceived as self-contained miniseries, following a different set of characters within the same fictional universe called the Fairelands. It premiered on May 25, 2023, on Twitch and YouTube and is broadcast on the last Thursday of each month at 19:00 PT. The first chapter's video on demand was uploaded to YouTube two weeks after the first broadcast. However, with the second chapter, the VODs are now uploaded to Critical Role's YouTube channel on the Monday after the live stream.

The Candela Obscura game system is based on the Illuminated Worlds system. A quick start guide for Candela Obscura was published to coincide with the start of the show; the core rule book was released on November 14, 2023.