Tris(dimethylamino)phosphine is an organophosphorus compound with the formula P(NMe2)3 (Me = methyl).

It is a colorless oil at room temperature, and is one of the most common aminophosphines.

[2] Tris(dimethylamino)phosphine acts as a base.

It can also act as a ligand, forming complexes with a variety of metal centers.

[4] Because of its affinity for sulfur, tris(dimethylamino)phosphine is also effective as a desulfurization agent, e.g., in the conversion of dibenzyl disulfide into dibenzyl sulfide:[5]