Kumai (surname)

Kumai is a Japanese surname. Notable people with the surname include:


 * Candice Kumai, American author and chef
 * Kei Kumai (熊井 啓), Japanese film director
 * Kouhei Kumai (熊井 幸平), Japanese actor
 * Motoko Kumai (熊井 統子), Japanese voice actress
 * Shunichi Kumai (熊井 俊一), Japanese football player
 * Yurina Kumai (熊井 友理奈), Japanese idol singer (Berryz Kobo)