Varmo is a comune (municipality) in the Province of Udine in the Italian region Friuli-Venezia Giulia, located about 70 kilometres (43 mi) northwest of Trieste and about 30 kilometres (19 mi) southwest of Udine. As of 31 December 2004, it had a population of 2,915 and an area of 37.1 square kilometres (14.3 sq mi).
Varmo borders the following municipalities: Bertiolo, Camino al Tagliamento, Codroipo, Morsano al Tagliamento, Rivignano, Ronchis, San Michele al Tagliamento.