Andrei Petrovich Ershov (1931-1988) was a mathematician and specialist in the field of programming theory and automation. A graduate of Moscow State University (1954), he worked in ITMCT AS (Academy of Sciences) USSR, in the AS USSR Computing Center. From 1961, he started working in the Siberian Branch of AS USSR (SB AS USSR): first in the Institute of Mathematics, from 1964 as the head of the Programming Division of the Computing Center, and then as head of the Experimental Informatics Laboratory. He was a doctor of Physical and Mathematical Sciences since 1967, a full member of the AS USSR since 1984, and professor. He was a member of the Association for Computing Machinery (ACM), a Distinguished Fellow of the British Computing Society, and vice-chairman of the IFIP Algol Working Group.