Eder Baù (born 16 August 1982 in Asiago) is an Italian footballer.
Baù started his career at A.C. Milan. He was loaned to Triestina at Serie C1 in summer 2001. Following Triestina's promotion to Serie B, the club bought half of his license for 200 million lire and later his full license in summer 2005. He played over 100 games for Triestina, but in January 2006, he was loaned to Pescara with an option to obtain half of the license. On 7 July 2006, Triestina half of Baù registration rights to newly promoted Spezia and another half to Pescara. Baù failed to score and was loaned to another relegation struggler, Serie B team F.C. Crotone.
After Spezia won relegation playoffs and remained in Serie B, Spezia bought the newly relegated Pescara's half.
He played once for Spezia in 2007–08 season before half of his license was sold to Padova at Serie C1. In September 2009, he terminated his contract with club 1 year earlier. He then played for Pro Patria and Serie D team Trento.