Turbine, Inc. (formerly Turbine Entertainment Software, Second Nature, and originally CyberSpace, Inc.) is an American computer game developer that pioneers 3D massively multiplayer online role-playing games (MMORPGs). Turbine was founded by Johnny Monsarrat, Jeremy Gaffney, Kevin Langevin, and Timothy Miller, changing their company name in 2005 to Turbine, Inc. In April 2007, Turbine released their most recent MMORPG, The Lord of the Rings Online.

Turbine is well known for employing fans of the game to the customer service side, for DDO examples being "Tolero" who hosted a long running role play segment on the unofficial DDO podcast, DDOcast, and Jerry Snook, creator and host of the podcast.

Turbine was a privately held company backed by Highland Capital Partners, Polaris Venture Partners, and other private investors since 1998; it has paid no dividends. On April 20, 2010, the company was formally acquired by Warner Bros..