This is a list of roads designated A21. Roads are sorted in the countries' alphabetical order. *

A21 road (Australia) Adelaide has two city ring routes, that loop around the Adelaide city centre and North Adelaide, known as the Inner and Outer Ring Routes. Inner ring route The Inner Ring Route is a collection of major roads signposted as state route R1 (was A2 ...

, a road in South Australia * A21 (Toowoomba, QLD) * A21 motorway (Austria), a road connecting Altlengbach and the A1 to Vösendorf and the A2 *

A21 road (England) ''For other roads with the same name see List of A21 roads.'' The A21 is a trunk road in Southern England, one of several which connect London and various commuter towns to the south coast. It provides a link to Hastings, East Sussex and parts ...

, a road connecting London with Hastings on the south coast * A21 motorway (France), a road connecting Aix-Noulette and Douai * A 21 motorway (Germany), a road connecting the road interchange with the A 1 at Bargteheide with Wankendorf * A21 motorway (Italy), a road connecting Turin and Brescia * A-21 motorway (Spain), a road connecting Jaca, Aragon and Pamplona, Navarre * A 21 road (Sri Lanka), a road connecting Kegalle and Karawanella * ''A21 road (United States of America)'' may refer to: ** A21 road (California), a road

See also