Ninja Birthday Cards

Celebrate your ninja’s big day with our fun and fierce Ninja Birthday Cards! Featuring cute characters tackling iconic obstacles, these cards capture the thrill and excitement of ninja training. Designed to represent every kid with diverse, energetic ninjas, they’re the perfect way to cheer on young athletes as they leap into another year of adventure. Whether for birthday parties or just to celebrate a ninja spirit, these cards bring fun and inspiration in every fold. Each card includes one white envelope.