There are hundreds of species of Lemming. Most are common are:

Dicrostonyx

1. Northern collared lemming (Dicrostonyx groenlandicus)
   
2. Ungava collared lemming (Dicrostonyx hudsonius)
   
3. Victoria collared lemming (Dicrostonyx kilangmiutak)
   
4. Nelson's collared lemming (Dicrostonyx nelsoni) or St. Lawrence Island collared lemming (D. exsul)
   
5. Ogilvie Mountains collared lemming (Dicrostonyx nunatakensis)
   
6. Richardson's collared lemming (Dicrostonyx richardsoni)
   
7. Bering collared lemming (Dicrostonyx rubricatus)
   
8. Arctic lemming (Dicrostonyx torquatus)
   
9. Unalaska collared lemming (Dicrostonyx unalascensis)
   
10. Wrangel lemming (Dicrostonyx vinogradovi)
    

Lemmus

1. Amur lemming (Lemmus amurensis)
   
2. Norway lemming (Lemmus lemmus)
   
3. Siberian brown lemming (Lemmus sibiricus)
   
4. North American brown lemming (Lemmus trimucronatus)
   
5. Wrangel Island lemming (Lemmus portenkoi)
   

Myopus

1. Wood lemming (Myopus schisticolor)
   

Synaptomys

1. Northern bog lemming (Synaptomys borealis)
   
2. Southern bog lemming (Synaptomyscooperi)
   
3. Tribe Arvicolini: over 120 species
   

Eolagurus

1. Yellow steppe lemming (Eolagurus luteus)
   
2. Przewalski's steppe lemming (Eolagurus przewalskii)
   

Lagurus

1. Steppe lemming (Lagurus lagurus)