Darwin's ringed worm lizard (Amphisbaena darwinii) is a species of amphisbaenian in the family Amphisbaenidae.

The specific name, darwinii, is in honor of English naturalist Charles Darwin.

[3] Darwin's ringed worm lizard may attain a snout-to-vent length (SVL) of 36 cm (14 in).

[4] Darwin's ringed worm lizard is found in Argentina, Brazil, Paraguay, and Uruguay.

[1] Darwin's ringed worm lizard is fossorial[1] and oviparous.