Arhopala irregularis is a butterfly in the family Lycaenidae. It was described by George Thomas Bethune-Baker in 1903. It is found in Sulawesi and Banggai in the Australasian realm.[1]
irregularisis similar to the preceding species, but considerably larger, the marking beneath also very irregular, though not so variegated as in abseus; the male above has a broader dark marginal bandand a very dark blue on the upper surface.[2]