Titanium(III) phosphide (TiP) is an inorganic chemical compound of titanium and phosphorus. Normally encountered as a grey powder, it is a metallic conductor with a high melting point. It is not attacked by common acids or water. Its physical properties stand in contrast to the group 1 and group 2 phosphides that contain the P<sup>3<nowiki>−</nowiki></sup> anion (such as Na<sub>3</sub>P), which are not metallic and are readily hydrolysed. Titanium phosphide is classified as a "metal-rich phosphide", where extra valence electrons from the metal are delocalised.
Titanium phosphide can be prepared by the reaction of TiCl<sub>4</sub> and PH<sub>3</sub>.
There are other titanium phosphide phases, including Ti<sub>3</sub>P, Ti<sub>2</sub>P, Ti<sub>7</sub>P<sub>4</sub>, Ti<sub>5</sub>P<sub>3</sub>, and Ti<sub>4</sub>P<sub>3</sub>.
Titanium phosphide should not be confused with titanium phosphate or titanium isopropoxide, both of which are sometimes known by the acronym TIP.