Jopie Troost

{{Short description|Dutch swimmer (born 1942)}}

{{Use dmy dates|date=February 2014}}

{{Infobox swimmer

|name=

|image=Fanny Blankers-Koen and Jopie Troost in Rome.jpg

| image_size = 260px

|caption=Jopie Troost (left) and Fanny Blankers-Koen at the 1960 Olympics

|birth_date={{birth-date and age|19 September 1942}}

|birth_place=Amsterdam, the Netherlands

|death_date=

|death_place=

| height = {{convert|1.75|m|ftin|abbr=on}}

| weight = {{convert|70|kg|lb|abbr=on}}

|sport=Swimming

|club=HDZ, Amsterdam

|alma_mater=

| show-medals = yes

| medaltemplates =

}}

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 of 4 × 100 m freestyle relay teams that set three national records in 1958.