Nannaphas Loetnamchoetsakun (; born 11 March 2002), nicknamed Mewnich (), is a Thai actress and singer. She is a former member of the Thai idol girl group BNK48, an international sister group of the Japanese idol girl group AKB48, under team NV. She is one of the second-generation members of the group.
Prior to joining BNK48 in 2018, she is known as a main host in Channel 7's Disney Club. She is also known for her roles in the romantic comedy series One Year 365 (2019) and in the Netflix teen drama series The Underclass (2020).
Nannaphas was born in Samut Prakan, Thailand. She got her nickname "Mewnich" because her mother was pregnant with her while she was in Munich, Germany. She has a younger sister nicknamed Ming.
She attended Assumption College Samutprakarn until Grade 11, then she got a GED diploma and enrolled at Srinakharinwirot University, where she received a Bachelor of Arts degree in Integrated Tourism Management under the Faculty of Environmental Culture and Ecotourism in 2023.
Nannaphas began her career as a child actress, making her feature in the 2008 lakorn Seu Rak Chak Yai Olawon. She also got her first movie appearance in the 2008 film The Last Moment. She later became more well known after being one of the main hosts on Channel 7's Disney Club along with Teeratun Khachonchaidechawut (Bogus) and Peerapon Permped (Pepe) from 2010 to 2018. She resigned her position as a host to join BNK48's second generation in 2018. She said she was inspired by BNK48's first generation to develop her singing and dancing skills. In the meantime, she went on to play various roles in many lakorns, portraying the child characters or as the younger version of the protagonists.
In 2018, she was first introduced to the public as one of the 2nd generation trainees at Bangkok Comic Con x Thailand Comic Con on April 29. She later performed as a BNK48 trainee for the first time during "BNK48 2nd Generation: The Debut" on July 17. Then she was serving as the centre in "Tsugi no Season", a coupling song from BNK48's 4th single "Kimi wa Melody", which sung by 2nd generation trainees. She was also selected as a senbatsu member for "BNK Festival".
In 2019, she placed 23rd in BNK48's 1st senbatsu election and as a result, featured on B-side "Kimi no Koto ga Suki Dakara" as a member of "Undergirls" on BNK48's 6th single "Beginner". While in the group, she still continued acting by taking a leading role of Mora, who has inherited the krasue curse in the 2019 horror film SisterS, which was released in theaters on April 4. She later participated on "Reborn", a coupling song from BNK48's 2nd album "Jabaja".
In the same year, she was promoted to a regular member of BNK48's newly formed Team NV on November 19. Few days later, the romantic comedy series One Year 365 was aired, where she was played as Praewprow, along with her fellow BNK48 members. She also participated in its soundtrack "Supporter", which is also a coupling song from BNK48's 7th single "77 no Suteki na Machi e".
In 2020, she came in 20th during BNK48's 2nd senbatsu election on April 19, thus making her a member of "Undergirls" on BNK48's 9th single. She later portrayed the lead of Pang, a Class A student who got demoted to Class F after she was caught cheating in the Netflix teen drama series The Underclass, along with her fellow BNK48 members and Tanutchai Wijitvongtong. She also appeared in the documentary film BNK48: One Take which follows the BNK48 members preparation before the group 1st General Election event. On August 21, the B-side "Hashire! Penguin" of BNK48's 9th single "Heavy Rotation" was released. Then she featured in "Can you ...?" and "Ma Ma Milk", the B-sides of BNK48's 3rd album "Warota People".
In 2021, she announced her graduation from BNK48 on March 12 due to health and educational reasons.
After she announced her graduation, she had her last activity as a BNK48 member on September 30, then she officially graduated on December 5.
In 2022, she took a role of Faifu in the coming of age melodrama series Finding the Rainbow. In the next year, she played as Patty, one of the fan club members of a famous Thai boy group Secret Dream who helps her fellow fan club members to meet Nanai (Chawarin Perdpiriyawong), the youngest member of the group in the 2023 comedy series Mission Fan-Possible.
In 2024, it was announced that she signed with GMMTV in May. Four months later, Riser Music revealed that she would be starring in Nattawat Jirochtikul's music video for "à ¸Âà ¹Âà ¸Â" (Alright).