Alan W. Archer (born 1930)[1] is a mycologist and taxonomist.

He is currently (January 2021) an honorary research associate at Royal Botanic Gardens Sydney.

He uses chemotaxonomy as well as morphological features in taxonomy and to devise keys, most recently for the genus Pertusaria in the Australasia region.

[2][3] During his career he has characterised and revised over 100 fungal taxa.

An advanced search of the Mycobank database shows that he has authored some 101 fungi taxa,[6] including Pertusaria xylophyes.