BLG may refer to: Former ISO 639-3 code for Balau, a dialect of the Iban language Barlow Lyde & Gilbert, a British law firm Belaga Airport, Sarawak, Malaysia Beluga Airport, Alaska β-Lactoglobulin Bilibili Gaming, a Chinese esports franchise BLG Logistics, a German seaport and logistics company in Bremen Borden Ladner Gervais, a Canadian law firm Burke's Landed Gentry, a genealogical publication