Lothar Frederick of Metternich-Burscheid (German: Lothar Friedrich von Metternich-Burscheid) was the Archbishop of Mainz from 1673 until 1675, and the Bishop of Worms from 1673 until 1675. On 15 December 1570 Lothar Frederick was appointed the coadjutor of Mainz. As Archbishop and Bishop, Lothar took a friendly attitude towards France, which remained a threat against the dioceses.