IA

IA or ia may mean:

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• Saint Ia, the martyr of Persia in the 4th century
• Interlingua (ISO 639 alpha-2, ia)
• the IATA Airline Designator for Iraqi Airways
• Indian Airlines, a domestic air carrier in India (whose IATA Airline Designator is "IC")
• Indian Army, part of the Military of India
• Iowa (U. S. postal abbreviation)
• Intel Architecture - Intel's microprocessor designs.
• IA-4 (the founding of microprocessors)
• IA-8 (most popular microcomputer CPUs of the 70s)
• IA-16 (CISC architecture that established the x86 CPUs)
• IA-32 (CISC over RISC architecture found in 32-bit x86 CPUs)
• IA-64 (EPIC variant VLIW architecture found in Itaniums)
• Internal Affairs
• Information architecture
• Information assurance
• Inter alias
• Internal Assessment