Mae'r Awdurdod Rhwymedïau Masnach (TRA) yn gorff cyhoeddus anadrannol gweithredol, a noddir gan yr Adran Busnes a Masnach. Mae'r TRA yn bodoli i amddiffyn y DU rhag arferion masnach ryngwladol annheg, megis dympio nwyddau.
The Trade Remedies Authority (TRA) is an executive non-departmental public body, sponsored by the Department for Business and Trade. The TRA exists to defend the UK against unfair international trade practices, such as the dumping of goods.