The 2019 FINA Water Polo Challengers' Cup is an international water polo tournament held at the OCBC Aquatic Centre in Singapore from 8 to 13 October 2019. It is the seventh edition of the tournament which was known as the FINA World Water Polo Development Trophy until the 2017 edition. The tournament was hosted by the Singapore Swimming Association. Ten nations participated in the Challengers' Cup.
Singapore won over Austria in the final, with the host surpassing their second-place finish in 2009.