Sumner has several possible meanings in the English language.

Sumner is the surname or last name of the following people:

Sumner is also the christian name or first name of the following people:
Sumner is the place name, or part of the place name, of various places in the world, including:
The Sumner method is a way of finding a ship's place at sea, and William Thomson (Lord Kelvin) calculated a set of tables for its ready application.

This is a disambiguation page; that is, one that just points to other pages that might otherwise have the same name. If you followed a link here, you might want to go back and fix that link to point to the appropriate specific page.