(anc. Neritum), a town of Naples, province of Otranto, in a well-cultivated district, 9 miles N.N.E. of Gallipoli. It is well built, and has a cathedral, several other churches, and an hospital. Olives are extensively grown in the neighbourhood, cottons and snuff are manufactured, and a considerable trade is carried on in these articles. In the marshes between Nardo and the sea will-o'-wisps are frequently seen, and have given rise to many local superstitions. Nardo, together with Gallipoli, forms the see of a bishop. Pop. 9000.