Well, it depends on which Universal Studios you're referring to. The one in Orlando, Florida, is typically open on Christmas Day, but with limited hours and select attractions. It's a great time to visit if you want to avoid the crowds and enjoy a more relaxed holiday experience. If you're thinking of the Universal Studios in Los Angeles, they're usually closed on Christmas Day. But, there are plenty of other festive events and activities happening in the area that you can explore.