The Kilwa sharp-snouted worm lizard (Ancylocranium ionidesi) is a species of amphisbaenian in the family Amphisbaenidae.

[2] The specific name, ionidesi, is in honor of British game warden Constantine John Philip Ionides (1901–1968), who was known as the "Snake Man of British East Africa".

[3] A. ionidesi is found in southeastern Tanzania.

[1] The preferred natural habitat of A. ionidesi is forest, at altitudes around 500 m (1,600 ft).

[1] A. ionidesi preys upon small invertebrates such as termites.