Cardiff South may refer to:
Australia
edit- Cardiff South, New South Wales, a suburb of the City of Lake Macquarie, Australia
- South Cardiff FC, a soccer club based in Cardiff South, Newcastle, Australia
Wales
edit- Cardiff South (UK Parliament constituency), a former borough constituency (1918–1950)
- Cardiff South and Penarth (UK Parliament constituency), a constituency created in 1983
- Cardiff South and Penarth (Senedd constituency), a former constituency (1999–2026)
- South (Cardiff electoral ward), a former electoral ward