"Lamento" (English: "Lament") is a song by the Peruvian singer-songwriter Gian Marco, released by Sony Music Latin and Crescent Moon Records in 2003 as the third single of his sixth studio album A Tiempo.

[7] It peaked at #38 on the Billboard Hot Latin Tracks chart and is his highest performing song.

It was a good follow-up success to the album's first two singles, "Se Me Olvidó" and "Te Mentiría".

[8] It is Gian Marco's highest performing ot two songs on the U.S. Latin Airplay chart.

[10] The music video for the song shows Marco walking through the streets singing it while carrying and occasionally playing his guitar.