Purev Tumurbator (Mongolian: Пүрэвийн Төмөрбаатар; born 6 January 1936) is a Mongolian chess player, two-times Mongolian Chess Championship winner (1956, 1969).

From the 1950s to the 1980s Purev Tumurbator was one of Mongolian leading chess players. He twice won Mongolian Chess Championship: 1956 and 1969. Purev Tumurbator twice participated in World Chess Championship Zonal tournaments: in 1969 (he shared 4th–5th place in West Asian Zonal in Singapore) and in 1972 (he ranked in 8th place in Asia West Zonal in Teheran).^[1]

Purev Tumurbator played for Mongolia in the Chess Olympiads:^[2]

• In 1956, at fourth board in the 12th Chess Olympiad in Moscow (+3, =6, -6),
• In 1972, at third board in the 20th Chess Olympiad in Skopje (+5, =8, -4),
• In 1974, at first reserve board in the 21st Chess Olympiad in Nice (+6, =4, -4),
• In 1980, at second board in the 24th Chess Olympiad in La Valletta (+4, =5, -5).

Purev Tumurbator played for Mongolia in the World Student Team Chess Championships:^[3]

• In 1957, at first board in the 4th World Student Team Chess Championship in Reykjavik (+2, =1, -10),
• In 1958, at second board in the 5th World Student Team Chess Championship in Varna (+7, =1, -2) and won individual gold medal,
• In 1959, at first board in the 6th World Student Team Chess Championship in Budapest (+1, =4, -8),
• In 1960, at first board in the 7th World Student Team Chess Championship in Leningrad (+2, =1, -10),
• In 1961, at third board in the 8th World Student Team Chess Championship in Helsinki (+2, =2, -6),
• In 1963, at first board in the 10th World Student Team Chess Championship in Budva (+0, =0, -3).