Ferry Weertman (born 27 June 1992) is a Dutch former competitive swimmer who specialises in long-distance freestyle and open water events.

[2] At the 2015 World Championships he won a silver medal in the same event.

[4] In 2016, Weertman won the 10 kilometer event at the 2016 European open water swimming championships in Hoorn, the Netherlands.

A month later, on 16 August 2016, he won the gold medal in the 10 km open water marathon at the 2016 Summer Olympics, outtouching two-time world champion Spyridon Gianniotis in a photo finish.

[6] In 2019, Weertman got engaged to his girlfriend of approximately 5 years, Ranomi Kromowidjojo who is also a Dutch swimmer.