Radda in Chianti is a comune in the Province of Siena in the Italian region Tuscany, located about 35 kilometres southeast of Florence and about 15 km north of Siena. Radda in Chianti borders the following municipalities: Castellina in Chianti, Castelnuovo Berardenga, Cavriglia, Gaiole in Chianti, Greve in Chianti.