To obtain a resin composition used for e.g. a resistor pattern which can be developed with a dilute aqueous alkali solution in a good pattern precision, leaves little organic residue when fired and has excellent adhesion and to obtain a cured product thereof.

A resin composition containing a carboxylic rosin compound and/or a phenolic resin, a diluent, a photopolymerization initiator and one or more members selected from among a metallic powder, a metal oxide and glass, and a cured product of the composition are provided.