- Ratufinae (1 genus 4 species) …Giant tree squirrels
- Sciurillinae (1 genus 1 species) …South American pygmy squirrels
- Sciurinae (20 genera 81 species)
Tribe Sciurin(5 genera 37 species) …Holarctic tree squirrels
Tribe Pteromyni (15 genera 44 species) …Flying squirrels
- Callosciurinae (14 genera 67 species) …Southern Asian tree squirrels
- Xerinae (22 genera 132 species)
Tribe Xerini (3 genera 6 species) …African ground squirrels
Tribe Protoxerini (6 genera 31 species) …African tree squirrels
Tribe Marmotini(13 genera 95 species) …Holarctic ground squirrels
This classification is based on
"Squirrels of the World "(2012)