Cyanuric bromide is a heterocyclic compound with formula C3N3Br3.

It is formed by the spontaneous trimerisation of cyanogen bromide.

Cyanuric bromide can be used to synthesize substituted triazines.

[1] Cyanuric trihydrazide is produced in the reaction with hydrazine.

[1] Cyanuric bromide can form in a reaction with potassium ferrocyanide with bromine at 200 °C.