The Serra de Moixeró is a mountain range running across the north of Catalonia (Spain), part of the Pre-Pyrenees.

The confusion is widespread enough that Cadí Tunnel, which connects Cerdanya with the rest of Catalonia beneath the Serra de Moixeró, was erroneously named for the adjacent range.

The southern slopes of the Serra de Moixeró are located in Berguedà, and are drained by the Gréixer stream, a tributary of the Bastareny.

Uniquely, around the Gréixer, the principal stone is variegated effusive rhyolite; in most of the rest of the range, Devonian limestone are found at peaks while carboniferous schist is more plentiful at lower elevations and to the east.

At lower elevations, the most common flora on Moixeró includes red pine and fir, with small scattered stands of beech.