Biu, Nigeria, a town in Nigeria Biu Emirate, a traditional state Biu Plateau, the highland area Bar-Ilan University, a university in Israel Bermuda Industrial Union, a general trade union in Bermuda Biu (footballer) (born 1936), Brazilian footballer Bus Interface Unit, a part of a processor that interfaces with a system bus BIU, the IATA airport code for Bíldudalur Airport in Iceland When stylized as , stands for bold, italic and underline, three common ways to mark emphasis in typography biu, the ISO 639 code of the Biate language of northeast India See also Biu–Mandara languages, a language group of Nigeria, Chad and Cameroon