Background: With criticism about the economic viability and environmental performance of biofuels, the use of byproducts and integration with external industries could be achieved to improve their performance and provide further use for byproducts and wastes. Methodology: A review of potential byproduct and utility exchanges between biofuel and external industries has been documented in this article through a literature review and brainstorming workshop, and results have been classified based on their interactions. Results: It has been found that byproduct exchanges, especially those between biofuel industries, and exchanges between the biofuel industries and the food, feed, agriculture and energy industries, offer many potential exchanges. Conclusion: The identified synergies offer possibilities for potential collaboration partners in symbiotic exchanges with the biofuel industry.