The Order of Merit of Philip the Magnanimous (German: Verdienstorden Philipps des Großmütigen) was an order of chivalry established by Louis II, Grand Duke of Hesse on 1 May 1840, the name day of Philip I, Landgrave of Hesse, in his honour to award extraordinary military or civil merit.

After the First World War and the fall of the German monarchies, the order—along with all other grand ducal decorations—was formally abolished in 1919.

The order was initially divided into four grades: Grand Cross, Commanders 1st and 2nd classes, and knight.

In 1876, the order was renamed the "Grand Ducal Hessian Order of Philip" (German: Großherzoglich Hessischer Philipps-Orden), though that decree was withdrawn a year later.

A final revision was made on 17 June 1911, with golden rays added to the cross arms of the Commander 1st Class grade.