Family name Seymor (Seymor 
) , in the world, is a rare last name. The cognomen Seymor is habitual in Iceland, where it is quite a rare surname, Netherlands, where it is a rare surname, and New Zealand, where it is a very rare surname. Not in comparison with a country's population, the name is most common in the United States, Netherlands, and the United Kingdom. Much less frequently, Seymor is the forename as well as the last name.