Surname 考兰 (考兰 
, Cowland 
, Caughlan 
) , in the world, is a rare cognomen. The cognomen 考兰 is characteristic of Australia, where it is a rare surname, the United Kingdom, and New Zealand. Measured by absolute frequency, this name is the most popular in the United Kingdom, the United States, and Australia. Very seldom, 考兰 is the forename as well as the last name.