1. Koshien Stadium, a baseball stadium in Koshien which is the venue of the annual high school baseball tournaments
2. High school baseball in Japan, the tournaments generally referred to as Kōshien, named after the stadium
3. Koshien, Nishinomiya, Hyōgo Prefecture, a neighborhood of Nishinomiya, Hyōgo, Japan
4. Koshien Stadium (baseball park in Nishinomiya, Hyōgo Prefecture)
5. National High School Baseball Tournament (held annually in August at Koshien Stadium); Summer Koshien
6. National High School Baseball Invitational Tournament (held annually in March at Koshien Stadium); Spring Koshien