Heath (Welsh: Y Mynydd Bychan) is the name of an electoral ward in the north of the city of Cardiff, Wales, which covers its namesake community, Heath. The ward elects three county councillors to the County Council of the City and County of Cardiff.

The Heath ward boundaries are coterminous with the community. It is bordered to the north by Ty-wern Road (Rhiwbina ward) and the Cardiff City Line (Llanishen ward), to the east by the Cardiff to Caerphilly railway line (Cyncoed ward), to the south by the Western by-pass (Gabalfa ward) and to the west by the A470 road (Whitchurch & Tongwynlais ward).^[1] The Heath ward includes the University Hospital of Wales and the large adjacent area of greenery, Heath Park.

According to the 2011 census the population of the Heath ward was 12,629.^[2]

Since the creation of the Cardiff unitary authority in 1995, Heath has elected councillors from the Labour Party, Liberal Democrats, Conservatives and, since 2012, the Heath and Birchgrove Independents.^[3]

The ward was created following The City of Cardiff (Electoral Arrangements) Order 1982, coming into effect with the city council elections in 1983.^[4]

The Heath ward was created in 1982. Prior to 1995 Heath was an electoral ward to Cardiff City Council (a district council of South Glamorgan). The ward elected three city councillors. All three city councillors were from the Conservative Party, from the 1983 council elections until the creation of the new Cardiff unitary authority.^[11]

Councillors included Ron Watkiss, Conservative leader of the council from 1983.