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Tõnis Mägi (born 18 November 1948 in Tallinn) is an Estonian singer, guitarist, composer and actor. He is one of the most influential and remarkable names in the Estonian rock music for the past 40 years.
He grew up in a musical family, music became interesting in his early childhood. While attending in the Tallinn 22nd High School (now Jakob Westholm Gymnasium) he started performing as the choir's soloist in the early grades. After learning to play guitar, Mägi started his musician career as a guitarist in school bands Juuniorid (1965) and Rütmikud (1966). After serving in the compulsory Soviet Army he became the vocalist of Baltika. Later he sang in the bands Kärjed, Laine, Muusik Seif, 777 and Ultima Thule.
In the 1970s–1980s Mägi gained big popularity not only in Estonia, but in the whole Soviet Union. One of his most popular songs Olimpiada (Олимпиада) became a symbol of the 1980 Moscow Olympics. In 1987 he gave his last concert in Russia, after which he returned to Estonia and focused on the Singing Revolution. Among other patriotic songs of the time, Mägi's song Koit (Estonian for Dawn) became a symbol of freedom.