Berkelium bromide is a bromide of berkelium, with the chemical formula BkBr<sub>3</sub>.
Berkelium bromide has a PuBr<sub>3</sub> structure at low temperature and is in the orthorhombic crystal system, with lattice parameters a = 403 pm, b = 1271 pm and c = 912 pm. At high temperature, berkelium bromide has an AlCl<sub>3</sub> structure and a monoclinic crystal system with lattice parameters a = 723 pm, b = 1253 pm, c = 683 pm and ò = 110.6ð.