This is a list of electoral districts or ridings in Canada for the Canadian federal elections of 1887 and 1891. In 1887, the Northwest Territories, which became part of Canada in 1870, were granted representation in the House of Commons.
Electoral districts are constituencies that elect members of Parliament in Canada's House of Commons every election.
*returned two members
| Preceded by Electoral districts 1882–1886 | Historical federal electoral districts of Canada | Succeeded by Electoral districts 1892–1903 |