Surname Betony (Betony 
) , throughout the world, is a very rare family name. The last name Betony is habitual in Nicaragua, where it is a very rare surname, the United Kingdom, and the United States, where it is an extremely rare surname. In absolute terms, this name is the most popular in the United States, the United Kingdom, and Mexico. More prevalently, Betony is the forename as well as the last name.