This study investigates the nutritional and anti-nutritional characteristics of six dominant fungi species in southwestern Nigeria, including Trametes vesicolor and Pleurotus sajor-cajor. The analysis revealed significant variations in protein, fiber, fat, and anti-nutrient content such as oxalate, phytate, tannin, and flavonoids among the species. Results indicate that while these mushrooms are rich in important nutrients, they also contain anti-nutrients that can affect health, highlighting the need for careful consumption.