South Colchester and Maldon was a parliamentary constituency in Essex represented in the House of Commons of the Parliament of the United Kingdom from 1983 to 1997.

This seat was created for the 1983 general election from parts of the abolished Colchester constituency and parts of the Maldon constituency.

It was abolished at the next redistribution which came into effect for the 1997 general election, when Colchester was re-established as a borough constituency and new county constituencies of Maldon and East Chelmsford and North Essex were created.

The constituency was formed from the bulk of the abolished Maldon constituency (the District of Maldon) and southern parts of the Borough of Colchester (including parts of the town of Colchester) which were previously part of the abolished county constituency of Colchester.

The seat was abolished in 1997, with the parts of the town being included in the re-established constituency of Colchester and remaining areas of the Borough of Colchester being included in the new constituency of North Essex, a seat surrounding Colchester.