Carlos Javier Benielli (March 26, 1878, in Mendoza – November 4, 1934, in Buenos Aires) was an Argentine writer, poet and educator.
He penned the lyrics for marches and hymns that are dedicated to famous figures from Argentinian history, many of which have become part of that nation's common cultural heritage.
In 1897, he became a professor at the Escuela Normal de Profesores "Mariano Acosta" in the Balvanera district of Buenos Aires.
This march (his most famous work), commemorates the Battle of San Lorenzo and memorializes the heroic actions of sergeant Juan Bautista Cabral.
In 2005, his remains were transferred to the cemetery at the Convent of San Lorenzo, where the Regiment of Mounted Grenadiers performs an annual ceremony in his honor.