Mário Lago OMC (Rio de Janeiro, November 26, 1911 — Rio de Janeiro, May 30, 2002) was a Brazilian lawyer, poet, radio host, composer, writer and actor.

Author of popular sambas such as "Ai! que saudade da Amélia" and "Atire a Primeira Pedra", both in partnership with Ataulfo ​​Alves, he became popular between the 1940s and 1950s.