Last name กันจา (Gunja 
, กันจา 
) , throughout the world, is a common cognomen. The surname กันจา is characteristic of India, where it is quite a rare surname, Croatia, where it is a rare surname, and United Arab Emirates. Measured by absolute frequency, it most frequently occurs in India, Thailand, and the United States. More prevalently, กันจา is the forename as well as the last name.