Jan Foltys (13 October 1908 – 11 March 1952) was a Czech chess International Master.
In May 1939, he took 7th in Stuttgart (1st European Tournament); the event was won by Efim Bogoljubow.
[3] During World War II, Foltys played in several strong tournaments.
In 1940, he won in Rakovník (Bohemia and Moravia-ch, Protektorat der Böhmen-Mähren Meisterschaft).
In 1941, he won ahead of József Szily and Ludovit Potuček in Trenčianske Teplice.
In September 1942, he tied for 3rd-5th with Efim Bogoljubow and Kurt Richter, behind Alexander Alekhine, and Paul Keres, in Munich (1st European Championship, Europameisterschaft).
In December 1942, he took 3rd, behind Alekhine and Klaus Junge, in Prague (Duras Jubileé).
Foltys had his best tournament result at Karlovy Vary / Mariánské Lázně in 1948.
He qualified in Mariánské Lázně in 1951 for the Interzonal of Stockholm 1952, but died of leukaemia at Ostrava on 11 March 1952 before it took place.