Marianna Zachariadi (Greek: Μαριάννα Ζαχαριάδη; 25 February 1990 – 29 April 2013) was a Greek pole vaulter who later competed for Cyprus.
She won silver in pole vault at the 2009 Mediterranean Games as well as at the 2010 Commonwealth Games. Zachariadi died in 2013, aged 23, of Hodgkin's lymphoma, which had been diagnosed in 2011.