Arthur Bliss Copp PC (July 10, 1870 – December 5, 1949) was a Canadian politician.

Born in Jolicure, New Brunswick, to Joseph Harvey Copp and Frances Lydia Brennan.

He was a lawyer before being elected to the Legislative Assembly of New Brunswick in a 1901 by-election; he represented Westmorland County until 1912.

He was first elected to the House of Commons of Canada for the New Brunswick riding of Westmorland in a 1915 by-election.

In 1925, he was called to the Senate of Canada representing the senatorial division of Westmorland, New Brunswick.