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Institutional Act Number Five

1968 · 20th century · Also known as AI-5

Institutional Act Number Five, known as AI-5, was a decree issued by the Brazilian military government on 13 December 1968 under President Artur da Costa e Silva. It closed Congress, suspended habeas corpus for political crimes, allowed the removal of elected officials and imposed censorship, opening the most repressive phase of the dictatorship. It remained in force until the end of 1978.

Institutional Act Number Five
Image: Public domain · Wikimedia Commons

Mentioned in 1 state history

Brazilian military dictatorship

See also

Cite this entry
APA
The Epoch Institute. (2026). Institutional Act Number Five. In The Epoch Institute Encyclopedia. https://the-epoch-institute.org/encyclopedia/institutional-act-number-five
MLA
“Institutional Act Number Five.” The Epoch Institute Encyclopedia, The Epoch Institute, 2026, https://the-epoch-institute.org/encyclopedia/institutional-act-number-five. Accessed .
Chicago
The Epoch Institute. “Institutional Act Number Five.” The Epoch Institute Encyclopedia. 2026. https://the-epoch-institute.org/encyclopedia/institutional-act-number-five.
Harvard
The Epoch Institute (2026) ‘Institutional Act Number Five’, The Epoch Institute Encyclopedia. Available at: https://the-epoch-institute.org/encyclopedia/institutional-act-number-five (Accessed: ).

Last reviewed October 2026Random entry ↻