Tags: Swimmer.
Josephina Johanna Jopie Troost (born 19 September 1942) is a retired Dutch swimmer who competed at the 1960 Summer Olympics in the 4×100 m freestyle relay. A medal favorite the Dutch team was disqualified in the heats for a premature start by Sieta Posthumus. Troost was part 4×100 m freestyle relay teams that set three national records in 1958.