Léon Lommel (3 February 1893 – 11 June 1978) was a Luxembourgian prelate of the Roman Catholic Church.

He studied in Echternach, Luxembourg, Rome, and Innsbruck, where he was ordained to the priesthood on 13 July 1919.

As a canon of Luxembourg Cathedral, he worked with architect Hubert Schumacher on its expansion from 1935 to 1938.

On 14 May 1949 Lommel was appointed Coadjutor bishop of Luxembourg and Titular bishop of Nephelis by Pope Pius XII, receiving his episcopal consecration on the following 29 June from Fernando Cardinal Cento.

He later succeeded Joseph Philippe, SCI, as the seventh Bishop of Luxembourg upon the latter's death on 21 October 1956.