Alexandru (Sándor) Tyroler (October 19, 1891, Garamszentkereszt, now Žiar nad Hronom, Slovakia-February 3, 1973, in Budapest, Hungary) was a chess master who won the first three Romanian championships.
Sándor Tyroler was born in Garamszentkereszt (Slovak: Hronský Svätý Kríž, German: Heiligenkreuz an der Gran) in Hungary (now Slovakia) into a Hungarian Jewish family. After World War I, following the Treaty of Trianon (1920), he became a citizen of Romania.