Heteroplacidium is a genus of lichen-forming fungi in the family Verrucariaceae.

[1] The genus was circumscribed by Austrian lichenologist Othmar Breuss in 1996 with Heteroplacidium imbricatum assigned as the type species.

[2] Other morphologically similar genera are Neocatapyrenium, Placidium, and Scleropyrenium, although molecular phylogenetic analyses indicate that they are independent monophyletic lineages within the Verrucariaceae.

[3][4] Most Heteroplacidium species are autonomous lichens, generally crustose and areolate.

Four species in the genus are obligate parasites or facultatively lichenicolous – H. compactum, H. fusculum, H. transmutans, and H. zamenhofianum.