Cu doped ZnO nanocrystalline powder (10 mol%) has been found to be an efficient catalyst for the one‐pot multi‐component synthesis of fully substituted new indeno[1,2‐b]pyridines through a combination of 1,3‐indandione, propiophenone or acetophenone derivatives, aromatic aldehydes, and ammonium acetate in ethanol/H2O at room temperature. The methodology is mild, efficient and high to excellent yielding.