• "Fro", slang for Afro, a hairstyle in the form of a big puff or
• fro, the ISO 639 code for the language ''Old French
• José Roel Lungay, a priest widely known as Fro (for Father Roel)
• Fro-Internet-Slang, a garbled internet term which basically means 'for'
• Fro, as in the phrase "to and fro" referring to back and forth

FRO can refer to

• Fixed return option, American Stock Exchange's name for binary option
• Faroe Islands
• Frontline Ltd's New York Stock Exchange
• Florø Airport's IATA airport code
• Family responsibility office, in Ontario , Canada
• Forest range officer, an officer in the State Forest Services of the Government of India
• First Response Officer, A multi skilled security/mines rescue specialist at Century Mine, Australia