Uromycladium falcatarium (falcataria gall rust fungus) is a species of rust fungus in the genus Uromycladium. It was circumscribed by mycologists Doungsa-ard, McTaggart & Shivasin in 2015. The species infects the Fabaceae tree Falcataria moluccana (= Paraserianthes falcataria) in south-east Asia.