Serse Cosmi (born 5 May 1958) is an Italian football coach who currently is in charge of Venezia.
Cosmi was born in 1958 in Ponte San Giovanni, a Perugia frazione. His father, a cycling fan, called him Serse after Fausto Coppi's brother, a cyclist himself, who died following a fall during a sprint. He worked nine years as primary school teacher, and played amateur football during his freetime for local teams such as Deruta, Cannara, Spello and Pontevecchio, in the role of midfielder.
He started a coaching career in the late 1980s in Ellera, as under-18 youth team coach. His debut as first team coach came in 1990, when he was appointed to coach Pontevecchio, a small amateur team from his native town of Ponte San Giovanni. Cosmi brought it on from the Prima Categoria (fourth level of amateur leagues in Italy) to Serie D (the top one) in just five years. Successively, he joined Arezzo, which he led from Serie D to Serie C1 in five extremely positive years.