ThPd2Ge2 crystallizes in the tetragonal I4/mmm space group. The structure is three-dimensional. Th is bonded in a 8-coordinate geometry to eight equivalent Pd and eight equivalent Ge atoms. All Th–Pd bond lengths are 3.36 Å. All Th–Ge bond lengths are 3.30 Å. Pd is bonded in a 4-coordinate geometry to four equivalent Th and four equivalent Ge atoms. All Pd–Ge bond lengths are 2.54 Å. Ge is bonded in a 9-coordinate geometry to four equivalent Th, four equivalent Pd, and one Ge atom. The Ge–Ge bond length is 2.48 Å.