NGC 1666 (also MCG -1-13-10 and PGC 16057) is a magnitude +12.6 face-on barred spiral galaxy located 127 million light-years away in the constellation Eridanus.
The galaxy was discovered by American astronomer Lewis A. Swift using a 40.6 cm (16 inch) Alvan Clark and Sons refractor at the Warner Observatory, East Avenue, Rochester, New York, on the 1st November 1886.
