Maria Marconi (born 28 August 1984 in Rome) is a diver from Italy, who represented her native country at the 2000 Summer Olympics. She won the qualification tournament for the 2008 Summer Olympics, also twice won a bronze medal at the European Championships (2002 and 2006) and once a silver medal (2009). She was 6th in the 1 meter springboard event at the 2009 FINA World Championships.
She is a sister of divers Nicola Marconi and Tommaso Marconi.