The A91 is a major road in Scotland, United Kingdom.

Further towards Cupar is the Eden Valley & Prestonhall Industrial Estates, home to such businesses as Cupar Garden Centre, Hoggs, Fishers Services and many others.

The A91 connects four areas: Stirlingshire, Clackmannanshire, Perthshire and Fife and a section of it is broken up by the M90 motorway near Kinross only to re-emerge and continue bound for Stirling or St Andrews depending on destination.

At Bannockburn the A91 emerges from the M9/M80 Pirnhall junction and skirts the urban area around Stirling and en route to St Andrews passes through Clackmannanshire villages and towns including Alva and Dollar.

The road also features a Junction with an unusual layout at Yetts 'O Muckhart.