3O

3O or 3-O may refer to:

• 3J, IATA code for Jubba Airways
• 3O, IATA code for Air Arabia Maroc
• 3o Sector, see Tertiary sector of the economy
• 3-O-sulfation, a phenomenon occurring in Heparan sulfate

See also

• O3 (disambiguation)

Topics referred to by the same term

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