ARIEL AQUINO MUHLACH (born on August 12, 1969), commonly known as Aga Muhlach, is a 2-time Gawad Urian and FAMAS award-winning Filipino actor and product endorser.

A popular matinee idol since his teens, he was acclaimed, beginning in the 1990s, as one of the country’s top dramatic actors. Muhlach began his career as a child actor, appearing in the 1978 film May Lalaki sa Ilalim ng Kama.His popularity soared in teeny-bopper roles such as Bagets (1983) and Super-Wan-Tu-Tri (1986), one of the films he co-starred with Janice de Belen, with whom he would have a son.

In 1984, he first attracted critical attention as the titular character in Miguelito, Ang Batang Rebelde, where he portrayed a rebellious teen in conflict with his mother. The role would gain him nominations for Best Supporting Actor from the FAMAS and Best Actor from the Gawad Urian.

In 1987, Muhlach would win his first Gawad Urian award, as Best Supporting Actor in Napakasakit, Kuya Eddie. Emerging as one of the top dramatic actors of the 1990s, he won Best Actor awards from the FAMAS for Sinungaling Mong Puso (1992) and the Gawad Urian for Sana Maulit Muli (1996). He also made the headlines for his romantic relationship with the Puerto Rican former Miss Universe Dayanara Torres, who would later marry the singer Marc Anthony. Muhlach himself would eventually marry the beauty queen Charlene Gonzalez, who represented the Philippines in the 1994 Miss Universe pagaent. He and Gonzalez are the parents of twins Andres and Atasha.

To date, Muhlach has appeared in over 50 movies, as well as several television sit-coms such as ABS-CBN's Oki Doki Doc. He also is a longtime commercial endorser for the Jollibee fast food chain.