B22

B22 or B-22 may refer to:

Science and technology

 * B22, a bayonet mount size for a light bulb
 * B22, an iceberg that calved from the Thwaites Ice Tongue in 2002
 * HLA-B22, an HLA-B serotype
 * AIDS dementia complex (ICD-10 code)

Transportation

 * Bundesstraße 22, a German road
 * Chery B22, a 2008 Chinese Chery Automobile model
 * Douglas XB-22, a proposed modification of the B-18 Bolo bomber
 * MWfly B22, an Italian aircraft engine design
 * Micro Aviation B22 Bantam, a New Zealand ultralight aircraft design

Other uses

 * Sicilian Defence (ECO code), in chess