The Bijani Chamber of Deputies election of October 1957 took place on Saturday, October 12, 1957, to elect the 80 members of the Chamber of Deputies of Bijan. It was triggered by President Mikalo Derna issuing the order on Monday, September 23, 1957, for an early election, less than seven months into the four-year term of the 4th Chamber of Deputies, which was chosen at a general election the previous February. The election coincided with the formation of the 4th National Council, the upper house of the National Assembly.
Much like its immediate predecessor, the election of October 1957 was frought with irregularities, and was widely seen domestically and internationally as rigged by the ruling Bijani National Party to produce a majority for itself in the Chamber. The BNP, emboldened by its parliamentary majority produced by the February 1957 election, pursued a constitutional amendment to change the way in which the Chamber of Deputies was elected from party-list proportional representation in multi-member constituencies to majoritarian representation in single-member constituencies. The constitution requires that a proposed amendment must be approved by two sessions of each chamber of the National Assembly on both ends of a general election, thus an election was called for October 1957.