Valentina Marchei (born 23 May 1986) is an Italian pair and single figure skater. As a singles skater, she is a five-time Italian national champion (2004, 2008, 2010, 2012, 2014). Her highest ISU Championship placements were 4th at the 2013 European Championships and 8th at the 2012 World Championships. She represented Italy at the 2014 Winter Olympics and placed 11th. Also, Marchei competed as a pair skater with Ondřej Hotárek, representing Italy. The pair finished 6th at the 2018 Winter Olympics.
Valentina Marchei was born 23 May 1986 in Milan, Italy. She is the daughter of Marco Marchei, a competitor in the marathon at the 1980 and 1984 Olympics. Her early interests were speed skating and gymnastics. She studied with a focus on sport at university and has worked as a reporter for Italian television.
Marchei began skating in 1993. She was coached by Cristina Mauri from the age of nine.