The honest answer
Most Japanese stadium food contains meat, fish, or dashi (fish stock). Dedicated vegetarian or halal options are rare. But with some planning, you can eat well at the ballpark.
What's usually available
Vegetarian-safe bets
Edamame (boiled soybeans): available at almost every stadium. Yakitori stands sometimes sell grilled corn on the cob. French fries are common. Rice balls (onigiri) with umeboshi (pickled plum) or kombu (seaweed) fillings are meatless, but check that the rice wasn't cooked with dashi.
Halal options
Dedicated halal food stalls are almost nonexistent at Japanese stadiums. ES CON Field in Hokkaido has the widest food variety and occasionally includes halal-friendly options, but don't count on it.
What to bring
Most NPB stadiums allow outside food. Buy vegetarian onigiri, salads, or sandwiches at a convenience store before the game. 7-Eleven, Lawson, and FamilyMart all have labeled vegetarian options (look for "yasai" 野菜 on the label). Bring enough for the whole game.
Best stadiums for dietary restrictions
ES CON Field: 30+ restaurants, widest selection. Tokyo Dome: large food court with some non-meat options. PayPay Dome: varied food stalls. Koshien and older stadiums: limited options, bring your own food.
Apps that help
HappyCow (vegetarian restaurant finder) and Halal Gourmet Japan can identify restaurants near stadiums for pre-game or post-game meals. Planning your meal before arriving at the stadium is the safest approach.
Buying tickets
Available through official team sites and English-language platforms with international card support.