Sheryn Mae Poncardas Regis (Tagalog: [ˈrɛhis]; born November 26, 1980) is a Filipino singer and songwriter. She rose to fame after finishing first runner-up in the television talent show Star in a Million in 2003. Dubbed as the "Crystal Voice of Asia," she is best known for singing the theme songs for several hit television series on ABS-CBN including Marina (2004), Krystala (2005), and Kampanerang Kuba (2005).

Regis is popularly known as a 'power belter', noted for her belting range and technical ability. With a career spanning 20 years in Philippine entertainment industry, she has since earned four multi-platinum albums and five gold records to her credit. In 2004, she placed second in one of Asia's most renowned music festivals since 1990, Voice of Asia. Regis was the original "Queen of Teleserye Theme Songs", being the voice behind several hit television shows in ABS-CBN. Among her many accolades includes the Asian Star Entertainment Award for 'Asian Best Female Performing Artist' and an Awit Award for 'Favorite Female Recording Artist', the local counterpart of Grammy Awards.