Sean Dean Gildenhuys (1983-) was born in Mbombela, South Africa. He worked in Gariep Plants and Kambroo Plants nurseries.
In 2016, Gildenhuys and Klopper published A synoptic review and new infrageneric classification for the genus Haworthiopsis (Xanthorrhoeaceae: Asphodeloideae) in Phytotaxa. They adopted 6 sections formerly recognized under Haworthia subg. Hexangulares to Haworthiopsis.