The Yu-Gi-Oh! Duel Monsters National Tournament prize cards are a set of physical and video game cards that were awarded to the top placers of the Yu-Gi-Oh! Duel Monsters National Tournament (遊戯王デュエルモンスターズ 全国大会), a tournament which was held from February 1 to 21, 1999 in Japan. All attendees of the tournament also received an attendance card, "Kanan the Swordmistress".
The video game cards were hidden cards in the game, Yu-Gi-Oh! Duel Monsters; the prize cards for the top four placers were the same as the physical prize cards.