Robert Henri Marchal (10 November 1901 – 15 July 1961) was a French long-distance runner.
He competed in the 10,000 m event at the 1924 and 1928 Summer Olympics and finished 9th and 11th, respectively.
In 1924 he was also a non-scoring member of the French 3000 m team that won the bronze medal.Marchal was also a member of French teams that twice won the International Cross Country Championships between 1924 and 1929.
Individually he finished third in 1926 and fourth in 1929.