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 species inhabits calcareous grasslands and arid mountain steppes, usually dominated by tragacanth locoweeds.

[1] 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.