Surname Lunchen (Lunch 
, Lunchen 
) , globally, is a rare cognomen. The surname Lunchen is habitual in Ireland, where it is a rare surname, Australia, and the United Kingdom, where it is a very rare surname. Measured by absolute frequency, the name is most common in the United States, Indonesia, and the United Kingdom. Likewise, Lunchen is the forename as well as the last name.