Polyalthia xanthocarpa is a species of plants in the custard apple family Annonaceae. It is endemic to the coastal lowlands between the Daintree River and Cape Tribulation in Queensland, Australia. It is a shrub to about tall, first described (as Haplostichanthus ramiflorus) in 2007 and transferred to its current name in 2012. It is listed as least concern under the Queensland Government's Nature Conservation Act.