That's a great question! On Christmas Day, many fast food places are typically open to serve the public. Some of the most common fast food places that are open on Christmas Day include McDonald's, Burger King, Taco Bell, KFC, and Pizza Hut. Additionally, some local and regional fast food chains may also be open, such as Jack in the Box, Sonic, and Five Guys. It's best to check with your local stores to confirm whether or not they are open on Christmas Day.