Ernst Erich Dinkelmann (14 May 1927 – 22 October 2010) was a South African rugby union player, most often playing as a lock. Dinkelmann played club rugby for Ermelo and provincial rugby for Northern Transvaal. He won six caps for the South African national team (the Springboks) and was part of the 1951–52 South Africa rugby tour of Great Britain, Ireland and France which lost only once in 31 matches, winning all five international Tests.