Juan Bautista Cabral (24 June 1789 – 3 February 1813) was an Argentine soldier, of Zambo origin, of the Regiment of Mounted Grenadiers who died in the Battle of San Lorenzo, while he was aiding then Colonel Don José de San Martín, whose horse had fallen to enemy fire.

The royalist forces (loyal to the Spanish Crown) had sailed up the Paraná River from Montevideo and landed on San Lorenzo, Santa Fe.

Enemy fire overturned San Martín's horse, trapping the colonel beneath it, while the royalists drew close charging with bayonets.

In any event, Cabral was critically wounded, and he died in the refectory of the neighboring San Carlos Convent, which was used as a field hospital.

The San Lorenzo march, by C. J. Benielli, is dedicated to him, and is taught in primary school.