OPA

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OPA may refer to:

Chemistry[edit]

  • Ortho-phthalaldehyde, a dialdehyde used in the synthesis of heterocyclic compounds and a reagent in the analysis of amino acids

Government[edit]

International agreements[edit]

Laws[edit]

Medicine[edit]

Music[edit]

  • Opa (band), Uruguayan jazz group
  • OPA! (band), a Swedish musical band
  • "OPA" (song), a song by Giorgos Alkaios & Friends competing in the Eurovision Song Contest 2010 for Greece
  • "Opa Opa", a song by Notis Sfakianakis, later covered by both Antique and Despina Vandi
  • Opa Opa, an alternative name to the album Mera Me Ti Mera by Antique

Physics[edit]

Sports[edit]

  • FC OPA, association football club from Oulu, Finland

Other uses[edit]