The single-striped grass mouse or single-striped lemniscomys (Lemniscomys rosalia) is a species of rodent in the family Muridae.
It is found in Angola, Botswana, Kenya, Malawi, Mozambique, Namibia, South Africa, Eswatini, Tanzania, Zambia, and Zimbabwe.
Its natural habitats are moist savanna and arable land.