Dror Bar-Natan (Hebrew: דרוֹר בָר-נָתָן; born January 30, 1966) is a professor at the University of Toronto Department of Mathematics, Canada.

His main research interests include knot theory, finite type invariants, and Khovanov homology.

Bar-Natan originally refused to take the Canadian citizenship oath because it would require him to swear allegiance to royalty.

[6] Academically, Bar-Natan has made significant contributions to the formalization of Khovanov homology.

Bar-Natan was a member of the Editorial Board for the journal Compositio Mathematica for 10 years, until 2010.