Rhodium(III) bromide refers to inorganic compounds of the formula RhBr3(H2O)n where n = 0 or approximately three.

[2] Rhodium bromides are similar to the chlorides, but have attracted little academic or commercial attention.

Rhodium(III) bromide adopts the aluminium chloride crystal structure.

For example, it reacts with bromine trifluoride to form rhodium(IV) fluoride and with aqueous potassium iodide to form rhodium(III) iodide.

[1] The dihydrate RhBr3·2H2O forms when rhodium metal reacts with hydrochloric acid and bromine.