Constitutional convention may refer to:
- Constitutional convention (political custom), an informal and unmodified procedural agreement.
- Constitutional convention (political meeting), a meeting of delegates to adopt a new constitution or revise an existing constitution.
Constitutional conventions by country
- Constitutional Convention (Australia), any of four gatherings in 1891, 1897–98, 1973, 1998
- Constitutional Convention (Philippines)
- Scottish Constitutional Convention
- United States