Kenichi Kasai (カサヰ ケンイチ Kasai Ken'ichi?, born 12 April 1970 in Gifu Prefecture) is a Japanese anime director.
He is amongst J.C.Staff's most noted directors, having directed the highly rated Honey and Clover series. Beginning his career as a production manager, using his name in kanji, Kenichi Kasai (笠井 賢一?), he moved on to direction with J.C. Staff. With 2002's Wagamama: Fairy Mirumo De Pon!, he began using his name in katakana.