Rigidoporus laetus is a species of polypore fungus in the family Meripilaceae.

It was originally described in 1883 as Polyporus laetus by Mordecai Cubitt Cooke.

[3] Peter Buchanan and Leif Ryvarden transferred it to Rigidoporus in 1988.

[4] Found in south Australia, the fungus is a plant pathogen that causes white rot in Eucalyptus.

This Polyporales-related article is a stub.