Stoyan Angelov Pilichev (Стоян Ангелов Пиличев, born November 20, 1938, Chiroko, Bulgaria) was a Bulgarian boxer who competed in the lightweight category at the 1964 and 1968 Summer Olympics, as a member of the Bulgarian national boxing team. In the 1964 Summer Olympics he lost to Józef Grudzień from Poland in the quarter-final. In the 1968 Summer Olympics he lost to Calistrat Cuţov from Romania in the quarter-final. Pilichev represented Bulgaria in the lightweight category of the 1969 European Amateur Boxing Championships. After reaching the final, he faced Calistrat Cuţov from Romania, in a rematch of 1968 Mexico City quarter-final, and he lost on points, resulting in winning the silver medal of the division.