Roberts Štelmahers (born November 19, 1974) is a Latvian retired professional basketball player, who played the point guard position. Štelmahers was a member of the Latvia national basketball team from 1992 to 2005 participating in four EuroBasket final tournaments in 1997, 2001, 2003 and 2005. He has played a total of 144 games for his national team. Currently he is the head coach of the Latvia national basketball team and BK Ventspils of the Latvian Basketball League.