No, Mount Yōtei is not Mount Fuji. It is a separate, smaller active stratovolcano located in Hokkaido, Japan. It's often nicknamed the "Mount Fuji of Hokkaido" or "Ezo Fuji" due to its striking, iconic cone shape, which is remarkably similar to Mount Fuji. While both are visually stunning and popular for outdoor activities, they are distinct mountains situated in different regions of Japan.