Bihar (; Hindi pronunciation: [bɪˈɦaːr] (listen)) bụ steeti dị n'ọwụwa anyanwụ India. Ọ bụ steeti nke iri na atọ kachasị ukwuu n'India, nke nwere mpaghara 94,163 km2 (36,357 sq mi). Ọtụtụ steeti na-ekwu na Bihar bụ steeti nke atọ kachasị ukwuu n'okpuru ọchịchị steeti, ọ na-aga n'ihu na Uttar Pradesh na ọdịda anyanwụ ya, Nepal na ugwu, akụkụ ugwu nke West Bengal n'ebe ọwụwa anyanwụ, na Jharkhand na ndịda. Bihar Plain bụ nke osimiri Ganges kewara, nke na-asọpụta site na ọdịda anyanwụ ruo n'ebe ọwụwa anyanwụ.
steeti nke atọ n'ọnụ ọgụgụ ndị bi na ya