Akane Yamaguchi
In 2019, Intanon won the Malaysia Masters Super 500, defending her title by winning in straight games for all her matches, including the final where she beat Carolina Marín. At the final of German Open Super 300, she lost to Akane Yamaguchi in three games, losing 23–25 in the deciding game. She then won her third Indian Open title by beating He Bingjiao. This was Intanon's first victory over her. She lost the final of Thailand Open to Chen Yufei in two games. She won the bronze medal at 2019 Basel World Championship after losing to Nozomi Okuhara in the semifinals. Intanon was one point away from winning the Korea Open against He Bingjiao, but she saved four match points and won the next game.