Umutingito w’Isi na Tsunami mu Buyapani cyangwa Umutingito na Tsunami mu Buyapani, Umutingito udasanzwe mu Buyapani (izina mu kiyapani : 東北地方太平洋沖地震 Tōhoku Chihō Taiheiyō-oki Jishin) ni umutingito na umutingito udasanzwe (tsunami) tariki ya 11 Werurwe 2011 ku gipimo cya Mw 9,0 wahitanye abantu hejuru ya 12,300 i Tōhoku mu Buyapani.