Boaz Tsaban (Hebrew: בועז צבאן; born February 1973) is an Israeli mathematician on the faculty of Bar-Ilan University.

In the field of selection principles, Tsaban devised the method of omission of intervals[2] for establishing covering properties of sets of real numbers that have certain combinatorial structures.

In nonabelian cryptology he devised the algebraic span method[3][4] that solved a number of computational problems that underlie a number of proposals for nonabelian public-key cryptographic schemes (such as the commutator key exchange).

Tsaban's doctoral dissertation, supervised by Hillel Furstenberg, won, with Irit Dinur, the Nessyahu prize[5] for the best Ph.D. in mathematics in Israel in 2003.

In 2009 he won the Wolf Foundation Krill Prize[6] for Excellence in Scientific Research.