Hybrid fanouts for semiconductor device assemblies, and associated methods and systems are disclosed. In one embodiment, at least one edge a first semiconductor die is attached to a molding including through mold vias (TMVs). Conductive traces may be formed on a first side of the first semiconductor die, where the first side includes integrated circuitry coupled to the conductive traces. Moreover, conductive pads may be formed on a surface of the molding, which is coplanar with the first side. The conductive pads are coupled to first ends of the TMVs, where second ends of the TMVs are coupled to bond wires connected to one or more second semiconductor dies that the first semiconductor die carries. Conductive bumps can be formed on the conductive traces and pads such that the first semiconductor die and the molding attached thereto can be directly attached to a printed circuit board.