A129 may refer to :

• A129 road (England), a road in Essex connecting Shenfield and Hadleigh
• Agusta A129 Mangusta, a 1983 Italian attack helicopter

• Cp Violation
• CPXK Virus
• CPY
• CPython
• CQ
• Cq
• CQC
• CQ (call)
• CQC/version 2
• CQD
• Cqfd
• CQ (film)
• CQ Press
• CQU
• C-QUAM
• CR
• Cr
• .cr
• CR2
• CR-20 Troop Carrier
• CR-21
• CR3
• CR.32
• CR4
• CR-4000