Marcelo Isasi is an Argentinian paleontologist, specializing in preparation and reconstruction of skeletons.
He was probably born in Argentina, and works at the Bernardino Rivadavia Natural Sciences Museum in Buenos Aires, Argentina.
He was part of the group of paleontologists that described Chilesaurus diegosuarezi in 2015.
Isasicursor santacrucensis was named after Marcelo in 2019.