Ni Luh Ketut Mahalini Ayu Raharja (; born March 4, 2000) is an Indonesian singer and actress. She is known for placing fifth on the tenth season of Indonesian Idol in 2020.
Mahalini is one of the Indonesian artists with the most monthly listeners on Spotify, 10.3 million in early June 2023 (the highest after Rich Brian and Niki). She also has four songs with over 100 million streams on the platform, namely "Melawan Restu", "Sisa Rasa", "Kisah Sempurna", and "Sial".
Ni Luh Ketut Mahalini Ayu Raharja was born on March 4, 2000 in Denpasar, Bali to parents I Gede Suraharja and Ni Nyoman Serini. Her name is based on the Balinese naming system, where "Ni Luh" is a prefix for female children while "Ketut" is a given name for fourth-born children. Mahalini was born into an ethnic Balinese and Hindu family, then she converted to Islam before marrying Rizky Febian.
Mahalini started participating in local singing competitions during junior high school. She then continued her education in SMA Negeri 1 Denpasar, where she received an achievement scholarship for her singing ability. In 2018, Mahalini studied Dentistry at Mahasaraswati Denpasar University before deciding to take a break to focus on her musical career in 2022.
Mahalini participated in the tenth season of Indonesian Idol in 2019. She had previously auditioned in the same singing competition on the ninth season but did not pass. On February 3, 2020, she was eliminated from the show and placed fifth.