Khan Academy is an American educational nonprofit organization founded in 2008 by Sal Khan. The organization provides free online learning resources for students and teachers worldwide.

The Khan Academy platform offers instructional videos, practice exercises, teaching tools, test preparation and assessment tests, across a range of subjects including mathematics, sciences, history, literature, economics, computer science. Lessons are typically delivered through short instructional videos paired with interactive practice activities.

Khan Academy is supported primarily through philanthropic donations, allowing its educational materials to remain freely available to users.