ABSTRACT: The Rhodogorgonales is an order within the rhodophyte subclass Corallinophycidae whose members exhibit calcification in the form of calcite. The order was erected in 1995 to include two monotypic genera described from the Caribbean. The thallus texture of Rhodogorgon ramosissima is cartilaginous, whereas Renouxia antillana is gelatinous. In the following two decades, Indo-Pacific specimens of cartilaginous and gelatinous rhodogorgonaleans, were assigned to these two species, respectively. In 2016, a third genus and species, Rhodenigma contortum, was described from microscopic filaments collected in Western Australia and included in the order based on DNA sequences. In 2018, Rhodogorgon flagellifera, was described from Western Australia based on the shape of cortical cells, but without DNA sequences. In 2019, Renouxia marerubra, was described from the Red Sea based on morphology and DNA sequences. In Thailand, Rh. ramosissima and Re. antillana have been reported from the east and west coast, respectively. However, without DNA sequences, their identification should be questioned. The present study explored the Rhodogorgonales diversity around Phuket island on the Thai west coast using multiple DNA markers. Two Renouxia species and three Rhodogorgon species were found. One of the Thai Renouxia species was conspecific with Re. marerubra. The other was conspecific with or very closely related to Rhodenigma contortum, suggesting that Rhodenigma should be synonymized with Renouxia. A Rhodogorgon with cylindrical branches could be linked to Rh. flagellifera based on comparison of a DNA sequence of its type specimen. The other two, a flabelliform and a truncated form, represent undescribed Rhodogorgon species. With five species, Phuket can currently lay claim to the unofficial title of “Rhodogorgonales Capital of the World”, a title it will likely have to pass on to an island in the Coral Triangle in the future when this region is more fully explored.