Thornliebank is a suburban area in East Renfrewshire, in the west central Lowlands of Scotland. Part of the Greater Glasgow conurbation, it is located on the Auldhouse Burn about six miles south of Glasgow city centre, and just outside the city's administrative boundaries. The neighbouring East Renfrewshire town of Giffnock lies directly to the east, with Rouken Glen Park to the south.

East Renfrewshire is one of 32 council areas of Scotland. It was formed in 1996, as a successor to the Eastwood district of the Strathclyde region. The northeastern part of the council area is close to Glasgow and many of the council area's northern settlements fall into the Greater Glasgow urban area.