Pseudomertensia is a genus of flowering plants in the family Boraginaceae. They are perennial herbs with blue or bluish purple flowers. Their natural range is from Iran to the Himalayas. None have been found in China or Russia. P. echioides, and the type species for the genus, P. elongata, are occasionally cultivated as ornamentals. Most sources list about 12 species, but some include as many as 14. Pseudomertensia was once thought to be closely related to Mertensia, but molecular phylogenetic studies have placed it close to Myosotis.