Martin Kupper
Martin Kupper (born 31 May 1989, in Tallinn) is an Estonian track and field athlete who competes in the discus throw. He has a personal best of , set in 2015. He is a member of the Audentese SK sports club. He competed in the discus as a teenager and began to improve in 2010, setting a best of and coming seventh at the Nordic Under-23 Athletics Championships. He cleared the sixty-metre mark for the first time in 2011 with a new best of and made his debut at continental level at the 2011 European Athletics U23 Championships  (competing in the qualifiers only). He improved for a third successive season in 2012, having a best of at the Kohila leg of the series. He threw beyond sixty metres to finish eighth at the 2013 European Cup Winter Throwing then had a throw of in August, which ranked him 22nd on the global seasonal lists. He made his debut at the European Championships in 2014 and finished the competition in ninth place. His best that year was , putting him 26th globally. He put himself at the top of the seasonal lists at the start of the following year with  a win at the 2015 European Cup Winter Throwing – his first international medal. He began to compete on the 2015 IAAF Diamond League circuit and had fourth-place finishes in Shanghai and Eugene. Further fourth places came at the FBK Games, the 2015 European Team Championships (1st League) and the 2016 Summer Olympics, with a throw at .