Boris Yakovlevich Bukreev Russian: ????? ????????? ??????? (6 September 1859 – 2 October 1962) was a Russian and Soviet mathematician who worked in the areas of complex functions and differential equations.
He studied Fuchsian functions of rank zero.
He was interested in projective and non-Euclidean geometry.
He worked on differential invariants and parameters in the theory of surfaces, and also wrote many papers on the history of mathematics.