Syzygium tierneyanum, commonly known as river cherry, water cherry, or Bamaga satinash, is a tree in the family Myrtaceae which is native to New Guinea, the Solomon Islands, Vanuatu and north east Queensland. It often grows along watercourses where it is a facultative rheophyte.
The river cherry was first described as Eugenia tierneyana in 1865 by Ferdinand von Mueller. It was reviewed and given its current binomial name in 1973 by Thomas Gordon Hartley and Lily May Perry.
This species is listed by the Queensland Department of Environment and Science as least concern., it has not been assessed by the IUCN.
This species has been widely planted as a park and street tree in the city of Cairns, Queensland.