Edoardo Mariani (; 5 March 1893 – 7 January 1956) was an Italian footballer who played as a left winger.
Mariani made four appearances for Italy, all of which came in 1912. He became the youngest forward to start a match for Italy, when he made his debut against France, starting in a 3âÂÂ4 friendly loss in Turin on 17 March 1912, at the age of 19 years and 12 days. This record was later bettered by Leopoldo Conti, who made his international debut on 28 March 1920, starting in a 3âÂÂ0 friendly away loss to Switzerland, at the age of . Mariani is either the third or fourth-youngest player ever to start a match for Italy, behind only Conti, Eugenio Mosso, and possibly Rodolfo Gavinelli. Mosso made his only international appearance for Italy on 5 April 1914, starting in a 1âÂÂ1 friendly away draw against Switzerland, at the age of . Gavinelli, on the other hand, made his only international appearance for Italy on 9 April 1911, starting in a 2âÂÂ2 friendly away draw against France, at the age of either , or , as it is not known officially whether he was born on 1 January in 1891 or 1895. He later competed for Italy in the men's football tournament at the 1912 Summer Olympics. Mariani made 3 appearances for Italy at the 1912 Summer Olympics, including his final international appearance, which came in a 5âÂÂ1 defeat to Austria on 3 July.