The giant blind snake (Rena maxima) is a species of snake in the family Leptotyphlopidae.

[3][4][2] The species is endemic to Mexico.

R. maxima is found in the Mexican states of Guerrero, Morelos, Oaxaca, and Puebla.

[2] The largest recorded specimen of R. maxima is a female with a snout-to-vent length (SVL) of 33 cm (13 in) plus a tail 1.8 cm (0.71 in) long.

[2] Clutch size may be as large as seven eggs.