The reactions of InCp* with alkali metal silanides M(thf)nSiRPh2 (R = Me, Ph) resulted in the triindanate [(Ph3Si)3In–In–In(SiPh3)]− with a linear arrangement of In atoms and the octaindium clusters [(In8(SiPh3)8]m− (m = 0, 2) amongst others, which were characterized by X-ray crystallography. The neutral cluster has a bisphenoidal core similar to that of B8Cl8, whilst the anionic one adopts a distorted square antiprismatic structure. In addition, the tri- and octaindium compounds were studied by DFT calculations.