David John Chalmers is an Australian philosopher and cognitive scientist specializing in the areas of philosophy of mind and philosophy of language. He is a professor of philosophy and neural science at New York University, as well as co-director of NYU's Center for Mind, Brain and Consciousness (along with Ned Block). In 2006, he was elected a Fellow of the Australian Academy of the Humanities. In 2013, he was elected a Fellow of the American Academy of Arts & Sciences.

Chalmers is best known for formulating the hard problem of consciousness, and for popularizing the philosophical zombie thought experiment.

He and David Bourget cofounded PhilPapers, a database of journal articles for philosophers.