Négresse is a name for black potatoes (actually purple).

Neufchâtel is a delicately flavoured cow's milk cheese from Normandy. If it is eaten when it is fresh known as fleuri, it is mild and likely to be served with fruit. As it ages it becomes stronger. Carré de Bray is a farmhouse version. (AOC).
Nice is the prefecture of the Alpes-Maritime and the name of the former county equivalent to Alpes-Maritime in Provence.
Nicholas is a variety of potato which Rab C Nesbitt grows in his garden and uses for chips (US: fries).