South Antrim may refer to:

• The southern part of County Antrim
• South Antrim (Assembly constituency)
• South Antrim (Northern Ireland Parliament constituency)
• South Antrim (UK Parliament constituency)

• Francisc Cocos
• Francisc Cocoş
• Francis Cecil Campbell Balfour
• Francis Celentano
• Francis Chaine
• Francis Chalmers Crawford
• Francis Chamberlain (Australian politician)
• Francis Chamberlain (governor)
• Francis Chamberlayne
• Francis Chandler
• Francis Chapelet
• Francis Chaplin
• Francis Charles McMains
• Francis Charles McMains, Jr.
• Francis Charles Morgan-Giles
• Francis Charles Portzline
• Francis Charles Synge
• Francis C. Harrington
• Francis Charter
• Francis Chatelet
• Francis Chibuike
• Francisc Horvat
• Francisc Hossu
• Francisc Hossu-Longin
• Francisc Hossu Longin