The Ceylon spiny mouse (Mus fernandoni) is a species of rodent in the family Muridae.

It is found only in Sri Lanka,[1] where it is known as ශ්‍රී ලංකා ක‍ටු හීන් මීයා in Sinhala language.

The underparts are pure white with many long black hairs overlying.

Tail scaly, dark purple in color, and longer than body length.

The Ceylon spiny mouse is an endangered species known only from the following locations.