Laurynas Gucevicius (Polish: Wawrzyniec Gucewicz; 1753–1798) was an 18th-century architect from the Grand Duchy of Lithuania, and most of his designs were built there.In his youth he travelled to Italy and Paris and other countries in Western Europe, where he studied architecture under the notable contemporary neo-classical French architects, Jacques-Germain Soufflot and Claude Nicolas Ledoux.
Later he was appointed professor at the Jesuit Academy of Vilnius, the predecessor of the University of Vilnius.
Among the best known of his works are the Vilnius Cathedral, the town hall and the summer palace of bishops in Verkiai.
The monumentality of forms and volume, the harmony with surroundings and a special treatment of antique architectural forms are the characteristics of his style.