Filettino is a village and comune located in the Lazio region of Italy. It is situated approximately 70 kilometres (43 mi) east of Rome and about 30 kilometres (19 mi) north of Frosinone.
The municipality borders several other local areas, including Canistro, Capistrello, Cappadocia, Castellafiume, Civitella Roveto, Guarcino, Morino, Trevi nel Lazio, and Vallepietra.