Acta or ACTA may refer to:

• Anti-Counterfeiting Trade Agreement, multi-lateral intellectual property trade agreement to be put through and enacted at the G-8 summit in July 2008
• Australian Community Television Alliance (ACTA), the industry association representing community television licensees in Australia.
• Acta Diurna, daily Roman official notices
• Acta Arithmetica, number theory publication
• Acta (conciliar), official proceedings of a council of the church or a government, such as the Acts of an Ecumenical Council
• Acta (software), early outliner software
• Acta Sanctae are hagiographical accounts of saints
• Administrative Council for Terminal Attachments See Registered jack
• American Council of Trustees and Alumni, an education organization
• Manny Acta, current manager of the Washington Nationals in Major League Baseball

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