Cranberry pomace is a primary by-product of the traditional cranberry juice processing industry and its disposal presents economic and environmental problems. Microbial conversion of cranberry pomace into various value-added products is a practical approach for solving such disposal problems. The present research was undertaken to test the growth of several agriculturally and industrially important fungi on cranberry pomace substrate through solid-state fermentation. Fungi, such as Trichoderma viride If-26, Trichoderma harzianum ATCC 24274, and Trichoderma pseudokoningii ATCC 26801, a novel polymeric dye decolorizing Penicillium isolate, and a food-grade Rhizopus strain isolated from Tempeh, that produce industrially important extracellular enzymes were grown on a cranberry pomace-based medium at 25 degrees C for 4 days. The glucosamine content of the heterogeneous fermented mixture was a good indicator of fungal growth. The maximum growth of all fungi was established on cranberry pomace supplemented with 0.05 g of CaCO3, 2.0 ml of water, and 0.05 g of NH4NO3 or 0.2 ml of fish protein hydrolysate per gram of pomace. It was concluded that bioconversion of cranberry processing waste by industrially beneficial fungi through solid-state fermentation was feasible. This potential can be coupled with the utilization of fish processing waste as an organic nitrogen source to develop mutually complementary products benefiting both the fishery and cranberry processing industries.