BU, Bu and variations may refer to:
Bulgaria (; Bulgarian: България, tr. Bǎlgariya), officially the Republic of Bulgaria (Bulgarian: Република България, tr.
Buenos Aires ( or ; Spanish pronunciation: [ˈbwenos ˈai̯ɾes]) is the capital and most populous city of Argentina.
Budapest (Hungarian: [ˈbudɒpɛʃt]) is the capital and by far the most populous city of Hungary and one of the largest cities in the European Union.
Bupropion is a medication primarily used as an antidepressant and smoking cessation aid. It is marketed as Wellbutrin and Zyban among other trade names.
Burning Man is an annual gathering in the western United States at Black Rock City—a temporary city erected in the Black Rock Desert of northwest Nevada, approximately one hundred miles (160 km) north-northeast of Reno.
Buffalo () is a city in and the seat of Erie County in Western New York. It is located within New York state on the eastern shore of Lake Erie, at the head of the Niagara River.