Ronell Renett Klopper (1974-) was born in Randfontein, South Africa. She is a plant taxonomist at the South African National Biodiversity Institute (SANBI). She worked with Gideon Smith et al. to raise Aloidendron to the generic level.
In 2016, Klopper and Gildenhuys published A synoptic review and new infrageneric classification for the genus Haworthiopsis (Xanthorrhoeaceae: Asphodeloideae) in Phytotaxa. They adopted 6 sections formerly recognized under subg. Hexangulares to Haworthiopsis.