Thomas Bathe, 1st Baron Louth (died 1478) was an Irish peer, barrister and judge of the fifteenth century. Even by the standards of that turbulent age, he had a troubled and violent career. He was deprived of his estates and outlawed by Act of Parliament, but was later restored to favour. His claim to the title Baron Louth was eventually recognised by the English Crown, and he ended his career as Chief Baron of the Irish Exchequer.