Cyclargus thomasi, known generally as the Thomas's blue, Miami blue or Caribbean blue, is a species of butterfly in the family Lycaenidae.

It is found in North America and the West Indies.

[2][3][4][5][6] The subspecies C. t. bethunebakeri, which is found only in Florida, is known as the Miami blue.

[7] The MONA or Hodges number for Cyclargus thomasi is 4358.

This Polyommatini-related article is a stub.