Lee Ah In, simply known as Ahin, is a South Korean singer, dancer, and former member of MOMOLAND. Her family moved to China when she was 6 years old, and she spent 11 years there. She graduated from Shanghai United International School and later returned to South Korea and graduated from Seoul Performing Arts High School, focusing on Applied Music.

She debuted in 2016 as the group's main vocalist with their 1st mini-album, "Welcome to Momoland". The group, managed by MLD Entertainment, was formed after the survival show "Finding Momoland". They had a few lineup changes when new members were added in 2017 but continued to actively promote in South Korea and Japan.

In 2020, their 3rd mini-album, "Show Me", peaked at #2 on the South Korean Gaon Album Chart, and the group gained a dedicated fanbase at home and even in other countries. Unfortunately, the group's unique sound and limited discography made it difficult for them to gain mainstream recognition, and they disbanded in February 2023.

(Source: Korean = NamuWiki || Translation = MyDramaList) Edit Biography