Mesobaena rhachicephala is a species of amphisbaenian in the family Amphisbaenidae. The species is native to Brazil.
M. rhachicephala is endemic to the Brazilian state of Pará.
The preferred natural habitat of M. rhachicephala is forest.
M. rhachicephala may attain a snout-to-vent length (SVL) of about . Dorsally, it is pink anteriorly, brown posteriorly, and dark brown at the tail tip; ventrally, it is cream-colored.
M. rhachicephala is terrestrial and fossorial. Specimens have been found at a depth of in sandy soil.
M. rhachicephala is oviparous.