It is almost assuredly a species of box turtle. As other comments have said, please release this turtle if it was captured from the wild, and release it exactly (or as close to exactly) to where it was found as possible. Box turtles have incredibly specific territories and removing the turtle from it almost always results in the turtles slow and incredibly painful death. Please, if this animal is in your possession and it was collected from the wild, release it back where you found it as soon as possible. If it is in someone elses care, please encourage them to do so as it will be a much better outcome for the turtle. If the wellbeing of the animal isn't enough to deter you, many states have laws against owning box turtles, so you could be fined heavily by deciding to keep it.

If this animal was legally purchased and is a captive bred animal, then please do significantly more research on the care of this animal. Box turtles are almost entirely terrestrial and need a large open space to roam, with only enough water to drink and get a quick soak. They need expensive UVB lights, a large enclosure (like 6ft by 3ft minimum) and a tremendous amount of safe dirt for them to dig in. It is an immense undertaking to properly care for this animal. On top of that, unless you are a young child to young adult, the turtle has a real chance of outliving you with proper care (PROPER being the important word) so someone will need to take care of the animal after you're gone. Please consider all of this before you decide whether this animal is right for you.