tetraiodide may refer to:
- Carbon tetraiodide, CI<sub>4</sub>
- Diphosphorus tetraiodide, P<sub>2</sub>I<sub>4</sub>, an orange crystalline solid and a versatile reducing agent
- Germanium tetraiodide, GeI<sub>4</sub>
- Iridium tetraiodide, IrI<sub>4</sub>
- Niobium tetraiodide, NbI<sub>4</sub>
- Platinum tetraiodide, PtI<sub>4</sub>
- Polonium tetraiodide, PoI<sub>4</sub>
- Protactinium tetraiodide, PaI<sub>4</sub>
- Rhenium tetraiodide, ReI<sub>4</sub>
- Silicon tetraiodide, SiI<sub>4</sub>
- Tantalum tetraiodide, TaI<sub>4</sub>
- Tellurium tetraiodide, TeI<sub>4</sub>
- Thorium tetraiodide, ThI<sub>4</sub>
- Tin tetraiodide, SnI<sub>4</sub>
- Titanium tetraiodide, TiI<sub>4</sub>
- Tungsten tetraiodide, WI<sub>4</sub>
- Uranium tetraiodide, UI<sub>4</sub>