In the context of sheep, Dorset may refer to:

• the Dorset Down, a British sheep breed
• the Dorset Horn, a British sheep breed
• the Polish Modified Dorset, a Polish sheep breed developed at the University of Life Sciences in Poznań
• the Poll Dorset, an Australian sheep breed derived from the Dorset Horn
• the Polled Dorset, an American sheep breed derived from the Dorset Horn