Edward Horsman PC, PC (Ire), was a British politician.

Cockermouth was the name of a constituency of the House of Commons of the Parliament of England in 1295, and again from 1641, then of the Parliament of Great Britain from 1707 to 1800 and of the Parliament of the United Kingdom from 1801 to 1918. It was a parliamentary borough represented by two Members of Parliament until 1868, and by one member from 1868 to 1885. The name was then transferred to a county constituency electing one MP from 1885 until 1918.