Ercüment Olgundeniz (born July 7, 1976) is a Turkish track and field athlete competing in the discus and occasionally shot put.

The 198 cm (6 ft 6 in) tall athlete at 146 kg (322 lb) is a member of Enkaspor, where he is coached by Teodoru Agachi.

Ercüment Olgundeniz won the silver medal at the 2009 Mediterranean Games held in Pescara, Italy.

On May 27, 2012, he improved his national record from 66.89 m set in 2011 to 67.50 m at the European Champion Clubs Cup held in Vila Real de Santo António, Portugal winning the silver medal.

[2] He qualified for participation in the discus throw event at the 2012 Summer Olympics, but did not reach the final.