Mariano Martín Donda (born 25 March 1982 in Buenos Aires) is an Argentine footballer. Donda holds European Union nationality. Donda started his professional career with Nueva Chicago in 2003. The club were relegated from the Argentine Primera in 2004, but Donda chose to stay with the club and helped them to earn promotion back to the Primera in 2006. At the end of the 2006–07 season, Nueva Chicago were relegated after losing their promotion playoff, this defeat prompted Donda's move to join Bari. On 26 July 2010, Donda terminated the contract with Bari in mutual consent.