J. & J. Braddock was an Oldham-based manufacturer of gas meters, pressure gauges, and other related equipment. Originally known as Newton & Braddock, run by partners George Newton, Joseph Braddock the younger, and Joseph Braddock the elder, the company became J. & J. Braddock when Newton left in 1869.

J. & J. Braddock became part of Meters Ltd in 1897 and is known to have continued trading until at least 1937.