Cognomen Janewit (Janewit 
) , in all the world, is a very rare surname. The last name Janewit is habitual in Thailand, where it is a very rare surname, and the United States, where it is an extremely rare surname. Much more prevalently, Janewit is the forename as well as the last name.
Nueam, Naosaran, Wijitpan, Sangsurin, Sithiwongs, Aimcharoen, Boonsuwan, Laohabutr, Jitbuntad, Tanomsakoran, Wannapeera, Suwannasri, Pitayataratorn, Wanichwatphibun, Wittayadet, Chuenprasaeng, Wattanawong, Yongrattanakit, Khammongkhol, Pattanapromchai, Pattanaleesakul, Lertchaipattanakul, Jutamart, Lertsinathichai, Kraprayoon, Boonchai, Vikul, Dubsork, Jundee, Sirisai, Soensombun, Kaewkit, Kosrikul, Ketkaew, Pilkulsri, Raluekrujiro, Boonyathanasit, Doungkwan, Jitkhati, Thawang, Tongtip, Manatmaetee, Mawinthorn, Sawasdee, Suansate, Chantong, Chamlong, Boriboon, Japimai, and Wittayaprapakorn