Pitchamon Opatniputh (Thai: พิชฌามลณ์ โอภาสนิพัทธ์, sometimes written as Opatniput; born 4 January 2007) is a Thai badminton player. She started playing badminton at the age of five and was trained by her father at the Thai Smile Badminton Club. She won the girls' singles title at the 2023 World Junior Championships.
She won two junior titles in 2018 at the Jakarta Junior and the Korea Junior. In 2019, she won the Pembangunan Jaya Raya Junior Grand Prix.
In January, she won her first international title as a senior at the Swedish Open after defeating Pornpicha Choeikeewong in the finals. In May, she was selected as a backup for the Thailand women's team at the 2022 Thomas & Uber Cup and won a bronze medal. She was also selected for the following 2021 SEA Games and won gold.
In June, she won her second international title at the Denmark Masters by defeating Sung Shuo-yun of Chinese Taipei in three tight games.
In October, she won the World Junior Championships by defeating Chiara Marvella Handoyo in the final in straight games.