Ruben Knab

Ruben Knab (born 19 February 1988) is a Dutch representative two-time Olympian rower. He finished fifth in the coxless four at the 2012 Summer Olympics and again finished fifth and at Tokyo 2020 in Dutch heavyweight men's eight.

He won a medal at the 2019 World Rowing Championships. At Tokyo 2020 the Dutch men's eight won their heat, then finished 5th in the A final for an overall fifth placing at the Olympic regatta.