Sudbury and Woodbridge was a county constituency centred on the towns of Sudbury and Woodbridge in Suffolk. It returned one Member of Parliament (MP) to the House of Commons of the Parliament of the United Kingdom.
The constituency was created by the Representation of the People Act 1948 for the 1950 general election, replacing the majority of both of the abolished county divisions of Sudbury and Woodbridge. It included the towns of Sudbury and Hadleigh, previously in the Sudbury constituency, and Woodbridge and Felixstowe, previously in the Woodbridge constituency.
It was abolished for the 1983 general election, and split between the new county constituencies of Suffolk Coastal (Woodbridge and Felixstowe) and South Suffolk (Sudbury and Hadleigh).