Muellerella hospitans

{{Short description|Species of fungus}}

{{Speciesbox

| image =

| image_caption =

| taxon = Muellerella hospitans

| authority = Stizenb. (1863)

| synonyms =

• Muellerella polyspora var. hospitans {{small|(Stizenb.) Keissl.}}
• Muellerella polyspora var. microspora {{small|Ferr.}}

}}

Muellerella hospitans is a species of lichenicolous fungus in the family Verrucariaceae.{{GBIF |id=5490660|taxon=Muellerella hospitans |accessdate=15 July 2022}} It is known to infect the lichen Bacidia rubella.