Martin Lucas (16 October 1894 – 3 March 1969) was a Catholic archbishop and diplomat of the Holy See.
He was ordained a priest of the Society of the Divine Word on 26 October 1924.
He was appointed Apostolic Delegate to South Africa and Titular Archbishop of Adulis on 14 September 1945.
On 29 October 1945 he was ordained a bishop by Cardinal Pietro Fumasoni Biondi, while the co-consecrators were Archbishop Celso Benigno Luigi Costantini and Bishop Johannes Hendrik Olav Smit.
On 16 April 1959 he was named the first Apostolic Delegate to Scandinavia, with responsibility for Denmark, Norway, and Sweden.