Tomares romanovi, or Romanoff's hairstreak, is a butterfly of the family Lycaenidae. It is found in Armenia, Azerbaijan, Georgia, eastern Turkey, northern Iran, and Kopet Dagh mountains.
The wingspan is 28âÂÂ30 mm. The species inhabits calcareous grasslands and arid mountain steppes, usually dominated by tragacanth locoweeds. It occupies elevation range from 1200 to 1600 m above sea level. The butterfly flies from late April to mid-June depending on latitude and elevation.
The larvae feed on the Astragalus species A. scharuhdensis and A. finitimus.