Erewhon: or, Over the Range (/ɛrɛhwɒn/) is a utopian novel by English writer Samuel Butler, first published in 1872, set in a fictional country discovered and explored by the protagonist. The book is a satire on Victorian society.
The first few chapters of the novel dealing with the discovery of Erewhon are based on Butler's own experiences in New Zealand, where, as a young man, he worked as a sheep farmer on Mesopotamia Station for four years (1860–1864), exploring parts of the interior of the South Island and writing about it in A First Year in Canterbury Settlement (1863).