Fios may refer to:
Fíos, a parish in Parres, Spain Verizon Fios, bundled home communications service offered by Verizon Communications in the US FiOS from Frontier, the former name for Frontier FiberOptic, a bundled home communications service offered by Frontier Communications in the US FiOS1, a defunct news-based pay television network carried by Verizon Fios in the New York metropolitan area FIoS, after a name denotes Fellow of the Institute of Swimming fios, an anticapitalist platform in Galicia, Spain.
See also Telefios, a former Scottish Gaelic-language news programme Institute of Swimming, a swimming educational organisation based in Loughborough, Leicestershire.