Lichenibacterium is a genus of Alphaproteobacteria. It is the only genus in the monotypic family Lichenibacteriaceae.
Whole-genome analyses of type strains indicate that Lichenibacterium and Lichenihabitans (Lichenihabitantaceae) form a well-supported monophyletic group. Broader genome and metagenome-based analyses further support inclusion of Lichenifustis (Lichenihabitantaceae) within the same lineage.
Based on phylogenomic analyses, the relationships among described species are as follows:
Formal taxonomic emendations merging Lichenibacteriaceae into Lichenihabitantaceae have not yet been validly published.