Sylphoides is a monotypic genus of cicadas in the family Cicadidae, subfamily Cicadettinae and tribe Cicadettini. It is endemic to Australia. It was described in 2012 by Australian entomologist Maxwell Sydney Moulds.
The genus name Sylphoides is derived from French sylphe, meaning a fairy-like spirit of the air.
As of 2025 there was one described species in the genus: