An acting president is a person who temporarily fills the role of a country's president when the incumbent president is unavailable (such as by illness or a vacation) or when the post is vacant (such as for death, injury, resignation, dismissal). The following articles detail the constitutional role of an acting president in various countries:

• Vice President of Chile
• Acting President of Colombia
• Acting President of France
• Acting President of Georgia
• Acting Head of State of Germany
• Interim and Acting President of Israel
• Acting President of Italy
• Acting President of Kazakhstan
• Acting President of Moldova
• Acting President of Pakistan
• Acting President of Poland
• Acting President of Russia
• Acting President of Sri Lanka
• Acting President of Turkey
• Acting President of the United States

• Interim management
• Provisional government

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