Cognomen Murhy (Murhy 
) , in the world, is a very rare surname. The cognomen Murhy is characteristic of New Zealand, where it is a very rare surname, the United Kingdom, and the United States, where it is an extremely rare surname. Not in comparison with a country's population, it most frequently occurs in India, the United States, and the United Kingdom. Much less frequently, Murhy is the forename as well as the last name.