John Thomas, American high jumper (b. 1941)
John Curtis Thomas (March 3, 1941 – January 15, 2013) was an American track and field athlete who set several world records in the high jump using the straddle technique. As a youth, he earned the Eagle Scout award. At the age of 17, while a freshman at Boston University, Thomas became the first man to clear 7 feet (2.13 m) indoors. He subsequently pushed the world indoor record to 7'1½" (2.17 m), and broke the world outdoor record three times, with a career best jump of 7'3¾" (2.22 m) in 1960 while just 20 years old.

Thomas' meteoric career briefly captivated the track world, but he failed to win an Olympic gold medal, despite being favored to win in both the 1960 and 1964 Games.

In 1960, he settled for the bronze medal behind Russia's Robert Shavlakadze (gold), and Valeriy Brumel (silver). Thomas's failure in 1960 on Thursday 1 September was accompanied by other failures that day by American favorites, and the day become known as 'Black Thursday'.In 1964 he was again beaten by Brumel, who cleared the same top height as Thomas, but was declared the winner based on fewer misses at lower heights. John Rambo won the bronze in 1964.

Thomas is an inductee of the USATF Hall of Fame.