Peccania tiruncula is a species of saxicolous (rock-dwelling), squamulose to dwarf fruticose lichen in the family Lichinaceae.

It was first described as a new species in 1878 by the Finnish lichenologist William Nylander, who classified it in the genus Omphalaria.

The type specimen was collected by Johan Petter Norrlin in Biskra.

[2] In Africa, Peccania tiruncula has been recorded from Algeria, Morocco, Namibia, and the Sahara; in the Arabian Peninsula, it is found in Oman.

Peccania tiruncula is also found in Europe and North America.