Reynolds Creek is a tributary within the Upper Thames River watershed in southwestern Ontario, Canada, managed by the Upper Thames River Conservation Authority (UTRCA). The creek flows through a predominantly agricultural landscape and supports a surprisingly diverse aquatic community, making it a worthwhile destination for anglers targeting both warmwater and coldwater species. The watershed encompasses 273 kilometres of watercourses, and Reynolds Creek itself is notable for containing both warmwater fish communities in its lower reaches and coldwater habitat in at least one known tributary, giving it a dual character that appeals to a broad range of fishing interests.