Yael Karshon (Hebrew: יעל קרשון; born 1964)[1] is an Israeli and Canadian mathematician who has been described as "one of Canada's leading experts in symplectic geometry".

Karshon took part in the 1982 International Mathematical Olympiad, on the Israeli team.

[2] Karshon is the author of the monographs Periodic Hamiltonian flows on four dimensional manifolds (Memoirs of the American Mathematical Society 672, 1999), which completely classified the Hamiltonian actions of the circle group on four-dimensional compact manifolds.

[7] With Viktor Ginzburg and Victor Guillemin, she also wrote Moment maps, cobordisms, and Hamiltonian group actions (Mathematical Surveys and Monographs 98, American Mathematical Society, 2002), which surveys "symplectic geometry in the context of equivariant cobordism".

[2] Karshon is from Israel, and lived in the US for ten years, eventually becoming a permanent resident.