A30

A30 or A-30 may refer to:

A30 matriline, the name given to the most commonly seen orca matriline in British Columbia, Canada
Austin A30, a 1950s British compact car
Aero A.30, a Czech light bomber developed in the late 1920s
HLA-A30, a human serotype

and also :

Roads

A30 motorway (Canada), a road in Quebec connecting Salaberry-de-Valleyfield and Bécancour
A30 road (England), a road connecting London and Lands End, Cornwall
A30 motorway (France), a road connecting A31 near Metz and N52 near Longwy, France
A 30 motorway (Germany), a road connecting Hannover and the Dutch A1 motorway
A30 motorway (Netherlands), a road connecting the A12 motorway near Ede with the A1 near Barneveld
A30 road (Isle of Man), a road connecting St. John's and Patrick
A30 road (Shanghai) or Suburb circular expressway, a road in China
A30 motorway (Spain), a road connecting Albacete with Murcia and the Autopista AP-7, Spain
A30 road (Sri Lanka), a road connecting Vavuniya and Parayanalankulama