Renato Marsiglia (born June 3, 1951 in Rio Grande, Rio Grande do Sul) is a retired Brazilian football referee.
He is known for supervising two matches during the 1994 FIFA World Cup in United States.Marsiglia also officiated at the 1991 and 1993 FIFA World Youth Championships, as well as 1994 World Cup qualifiers.He was a Rede Globo football commentator who specialises in analysing referee's performances, until 2018.