Many entities have been called a Constitutional Commission with the general purpose of reviewing a constitution, or planning to create one.
In 1985 a Constitutional Commission was established (by the Hawke Labor government) to review the Australian Constitution and reported in 1988. It was seen as too partisan by many Liberals and the eventual referendum questions were not supported; leading to the lowest 'yes' vote count for any referendum in Australia (in 1988).
The federally initiated Rowell–Sirois Commission of 1937 to 1940 recommended (successfully) that the federal government take over unemployment insurance and pensions from the provinces.
The Quebec-initiated Royal Commission of Inquiry on Constitutional Problems of 1953 to 1956 argued (unsuccessfully) for the devolution of more powers to the Province of Quebec.
The federal Royal Commission on Bilingualism and Biculturalism recommended (successfully) that Canada become officially bilingual and bicultural (later modified to multicultural).
On January 1942, the Philippine Executive Commission or PEC was established as the temporary care-taker government of the Greater Manila area and eventually of the whole Philippines during the Japanese occupation of the country during World War II. The constitution existed until the Liberation of Manila in 1945.
In 1986, President Corazon Aquino dissolved the 1973 Constitution and called for its revision. From February 1986 to February 1987, the Philippines was run under a Provisionary Constitution called "Freedom Constitution" drafted by her executive secretary Joker Arroyo. On September 1986, the Constitutional Commission of 1986 was set up with all members appointed by Aquino. The revised Philippine Constitution was placed into a plebiscite with 76% affirmative votes and was approved.