Euacanthella is a genus of leafhoppers, native to Australia and adventive in New Zealand; it is now placed in the subfamily Errhomeninae and the monogeneric tribe Euacanthellini .
The obsolete subfamily Euacanthellinae contained two tribes, Euacanthellini (always containing just Euacanthella), and Sagmatini (now placed in the Aphrodinae). A monotypic genus Paulianiana endemic to Madagascar is now placed incertae sedis in the Ledrinae.
New Zealand has a single species, Euacanthella palustris, adventive from Australia. The World Auchenorrhyncha Database includes: