Pachygonidia martini is a moth of the Sphingidae family. It is known from Central America and South America. It has been recorded as far south as Bolivia and Peru. It is similar to Pachygonidia hopfferi, but the forewing outer edge is rounded and the outer edge of the dark postmedian band is wavy or toothed. There are probably multiple generations per year. The larvae probably feed on Doliocarpus dentatus, Doliocarpus multiflorus and Tetracera hydrophila.