Letheobia newtoni is a species of snake in the family Typhlopidae.
The specific name, newtoni, is in honor of "M. F. Newton", who collected the type specimen on Ilhéu das Rolas in the Gulf of Guinea. "F. Newton" refers to Portuguese botanist Colonel Francesco Newton (1864–1909).
The holotype of L. newtoni is 40 cm (16 in) in total length, which includes a tail 6 mm (0.24 in) long. The body is slender, the diameter not exceeding 8 mm (0.31 in). The scales are in 28 rows around the body. Dorsally and ventrally, it is uniformly yellowish white.
L. newtoni is oviparous.
