YAG, YaG, Yağ, or yag can refer to:
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Yttrium aluminium garnet
Yttrium aluminium garnet (YAG, Yttrium, Y3Aluminium, Al5Oxygen, O12) is a synthetic crystalline material of the garnet group. It is a Crystal system, cubic yttrium aluminium oxide phase, with other examples being YAlO3 (YAP) in a Crystal system, ...
, a synthetic crystal used in solid-state laser systems
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Fort Frances Municipal Airport, Ontario, Canada, IATA code
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YMCA Youth and Government, a model government program for youth
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Yahgan language, spoken in Chile and Argentina, ISO 639 code
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Cansu Yağ (born 1990), a female Turkish footballer
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YAG training vessels, wooden Canadian Navy boats 1954–1955
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District auxiliary, miscellaneous (YAG), US Navy hull classification symbol
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