| A | B |
|---|
 | Barbados |
 | Booroola Merino |
 | Border Leicester |
 | California Red |
 | Cheviot |
 | Columbia |
 | Corriedale |
 | Dorper |
 | Finnsheep |
 | Hampshire |
 | Icelandic |
 | Katahdin |
 | Lincoln |
 | Merino |
 | Montadale |
 | Oxford |
 | Polypay |
 | Rambouillet |
 | Romney |
 | Shropshire |
 | Southdown |
 | Suffolk |
 | Targhee |
 | Texel |
| This English sheep breed is known for its good growth rate, black face and legs | Hampshire |
| This English sheep breed was imported into the US in 1855 and has a black face and legs | Shropshire |
| This breed of sheep is a cross between Hampshire and Cotswold, was imported into 1846 and has a brown face and legs | Oxford |
| This English sheep breed has a white to light brown face and was imported into the US in 1803. | Southdown |
| This English sheep breed has a black face and legs, was imported to the US in 1888 and has the most registrations in the US. | Suffolk |
| In this English sheep breed, both ewes and rams can be horned. It is known for its out of season breeding. | Dorset |
| This long-wooled English sheep breed has a white face and was imported into the US in 1825 | Lincoln |
| This long-wooled English sheep breed was imported to the US in 1904 and is known for its ability to withstand cold and wet conditions. | Romney |
| This sheep breed was developed in the US from a Cheviot/Columbia cross | Montadale |
| This dual purpose US sheep breed was developed from Lincoln rams and Rambouillet ewes | Columbia |
| This US sheep breed was developed at the Idaho Experiment Station from a 4-way cross of Finn x Dorset x Rambouillet x Targhee. It is known for its prolificacy. | Polypay |
| This US sheep breed was developed at the Idaho Experiment Station from Columbia/Rambouillet or Rambouillet/Corriedale cross | Targhee |
| This breed of sheep hails from Finland, is used largely in crossbreeding and is known for its prolificacy | Finn Sheep |
| This fine-wooled breed of sheep was developed in Spain | Merino |
| This sheep breed was developed in New Zealand, has a white face and was imported into the US in 1914. | Corriedale |
| This is the newest breed of sheep imported to the US from the Netherlands | Texel |
