A-55 may refer to:

• A55 highway (Australia), a road connecting St George,Queensland and Lithgow, New South Wales
• A55 motorway (Canada), a road Qu bec connecting Stanstead and Shawinigan
• A55 motorway (France), a road connecting Marseille and Martigues
• A55 road (Great Britain), a road connecting Chester and Holyhead
• A55 road (Northern Ireland), a road around Belfast
• A55 Fusion Controller Hub, a chipset used for AMD microprocessors
• Sony Alpha 55, a DSLR camera

See also

• List of highways numbered 55

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