Last name Локхарт (Lockhart 
, Локхарт 
) , throughout the world, is a common cognomen. The family name Локхарт is characteristic of Latin America and the Caribbean, particularly Bahamas, where it is a common surname, Dominica, where it is quite a common surname, and Saint Vincent and the Grenadines (explore the name in all countries). Not in comparison with a country's population, it is the most numerous in the United States, the United Kingdom, and Canada.