The Pic du Midi Observatory () is an astronomical observatory located at 2877 meters on top of the Pic du Midi de Bigorre in the French Pyrenees. It is part of the Midi-Pyrenees Observatory (; OMP) which has additional research stations in the southwestern French towns of Tarbes, Lannemezan, and Auch, as well as many partnerships in South America, Africa, and Asia, due to the guardianship it receives from the French Research Institute for Development (IRD).