A baseball park, baseball stadium, or ball park / ballpark is a place where baseball is played. It refers to the field of play, seating areas (if any) and any other things added to it.

The flexible rules about baseball fields (aside from the rigid rules of sizes of basepaths and pitcher's mound) allow ballparks to have their own character and quirks. This happens at all levels of baseball, amateur and especially professional. This makes each stadium interesting and unique.