Surname Khunnaphat (Khunnaphat 
) , globally, is an extremely rare last name. Much more frequently, Khunnaphat is the forename as well as the last name.
Inbua, Temboonsakdi, Wutthichai, Sricharoen, Pechmanee, Audomborriphan, Srisuchat, Lertborworn, Chanthauthit, Laobuadee, Sopharat, Nimkoom, Nimkhoom, Nimkhum, Khuipum, Sringam, Srinan, Poolthong, and Rattanaamarangkun