James Alexander Calder, PC (September 17, 1868 – July 20, 1956) was a Canadian politician.Born in Oxford County, Ontario, he received his Bachelor of Arts degree from the University of Manitoba in 1888. He was a teacher and principal, before being elected to the Legislative Assembly of Saskatchewan for the riding of South Regina in the 1905 provincial election. A Liberal, he was re-elected in a 1908 by-election and in the 1912 election.