Worldwide, Penjai (Penjai 
) is a rare mostly masculine, but seldom feminine forename. The given name Penjai is characteristic of Guinea-Bissau, where it is quite a rare boy's name, Thailand, where it is a very rare girly name, and India, where it is an extremely rare masculine name. Very seldom, Penjai is the last name as well as the forename.
Jang, Boonsamram, Anantaphut, Sompongchaiyakul, Thitathan, Kaewsuwan, Jarenlap, Boriboon, Chaiwong, Mumaphai, Jiansuwan, Rodchum, Sopanna, Sinsamersuk, Utasoontorn, Inpean, Srinak, Meedach, Leelaburanapong, and Thongnuanjan