Modesta Vžesniauskaite (born 17 October 1983 in Panevežys) is a female road racing cyclist from Lithuania, who represented her nation at the 2008 Summer Olympics in Beijing.
She competed in the women's road race, and completed the run in twenty-seventh place, with a time of 3:33:17.
She is currently a member of Forna d'Asorno cycling team in Italy.