Matthey's mouse (Mus mattheyi) is a species of rodent in the family Muridae. Matthey's mouse was first described by Francis Petter (1923–2012) in 1969 and was named after Robert Matthey (1900–1982).
It is found in Burkina Faso, Ivory Coast, Ghana, Mali, Senegal, Togo, and possibly also in Benin, Guinea, and Guinea-Bissau.