Fios
Fios may refer to:
- Fios, gaelic word for knowledge
- Fíos, parish in Parres, Spain
- Verizon FiOS, bundled home communications service offered by Verizon Communications in the United States
- FiOS from Frontier, bundled home communications service offered by Frontier Communications in portions of the United States.
- Fios Genomics, Edinburgh based provider of bioinformatics data analysis services
- Fios, Tax consultancy company in the Isle of Man