Cognomen Sanmy (Sanmy 
) , all over the world, is a very rare family name. The cognomen Sanmy is characteristic of Latin America and the Caribbean, particularly Honduras, where it is a rare surname, Venezuela, where it is a very rare surname, and Nicaragua. Measured by absolute frequency, the name is most common in Venezuela, Honduras, and Nigeria. Likewise, Sanmy is the forename as well as the last name.