Trichlorogermanate is the inorganic anion with the formula . It is the chloride adduct of germanium dichloride:
The anion can be isolated as a quaternary ammonium salt. The anion is similar to trichlorostannate ().
The anion is pyramidal according to X-ray crystallography with Cl-Ge-Cl angle of about 95° and Ge-Cl distance of 232 pm.