Alexey Fyodorovich Leontiev (Russian: Алексей Фёдорович Леонтьев; 27 March 1917 – 14 April 1987) was a Soviet scientist in the field of mathematics, professor, Member of the Academy of Sciences of the Soviet Union, laureate of the USSR State Prize (in 1989, posthumously).
In 1941, after the outbreak of World War II, he joined the militia and took part in the construction of fortifications around Gorky.
From 1962 to 1971, he held the post of senior researcher at the Steklov Mathematical Institute of the Academy of Sciences of the USSR.
Under his leadership in Ufa, a mathematical scientific school on the theory of functions of a complex variable was formed.
[2] Area of scientific interests: functions of a complex variable, sequences of polynomials in exponentials, questions of approximating solutions of convolution equations on the axis and in the complex domain by means of elementary solutions, the theory of equations of infinite order.