Merton and Morden was a parliamentary constituency in what was then the Merton and Morden Urban District in Surrey, but in major local government boundary changes in 1965 became part of the London Borough of Merton in Greater London. It returned one Member of Parliament (MP) to the House of Commons of the Parliament of the United Kingdom, elected by the first past the post system.

The constituency was created for the 1950 general election from part of the Wimbledon constituency, and abolished for the February 1974 general election. It was replaced by the Mitcham and Morden constituency.

The Urban District of Merton and Morden.