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) This is a list of roads designated A21. Roads are sorted in the countries' alphabetical order. * A21 road (Australia), a road in South Australia * A21 (Toowoomba, QLD) * A21 motorway (Austria), a road connecting Altlengbach and the A1 to Vösend ...

, 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) The A21 autoroute is a toll free highway in north western France it is also known as the ''Rocade Minière''. It is long. Junctions Completed In construction Upgrade of N455 between Flers-en-Escrebieux and Pecquencourt which is the norther ...

, a road connecting Aix-Noulette and Douai *

A 21 motorway (Germany) is an autobahn in Germany. It runs from an interchange with the A 1 at Bargteheide to Wankendorf, halfway between Bad Segeberg and Kiel. A northbound extension to Kiel Kiel () is the capital and most populous city in the northern Ge ...

, a road connecting the road interchange with the A 1 at Bargteheide with Wankendorf *

A21 motorway (Italy) The ''Autostrada A21'' is an Italian motorway, which connects Turin to Brescia, through the Po Valley and the city of Piacenza Piacenza (; egl, label= Piacentino, Piaṡëinsa ; ) is a city and in the Emilia-Romagna region of northern Italy ...

, a road connecting Turin and Brescia *

A-21 motorway (Spain) A- or a- may refer to: ;A-hyphen * A- (plane), a U.S. military aircraft prefix * Privative a, a prefix expressing negation * Copulative a, a prefix expressing unification ;A-minus * A−, a blood type in the ABO blood group system * A− (grade) ...

, a road connecting Jaca, Aragon and Pamplona, Navarre *

A 21 road (Sri Lanka) The A 21 road is an A-Grade trunk road in Sri Lanka. It connects Kegalle Kegalle ( si, කෑගල්ල; ta, கேகாலை) is a large town in Sabaragamuwa Province of Sri Lanka. It is located on the Colombo– Kandy road, approximat ...

, a road connecting Kegalle and Karawanella * ''A21 road (United States of America)'' may refer to: **

A21 road (California) There are 28 routes assigned to the "A" zone of the California Route Marker Program, which designates county routes in California. The "A" zone includes county highways in Lassen, Plumas, Shasta, Siskiyou, and Tehama counties. A1 County Ro ...

, a road

See also