Worldwide, กุมประสิทธ์ (กุมประสิทธ์ ) is an extremely rare unknown gender forename. Much more frequently, กุมประสิทธ์ is the last name as well as the forename.
Kumprasitt
สมชาย
) is an extremely rare unknown gender forename. Much more frequently, กุมประสิทธ์ is the last name as well as the forename.