Christian Halldorson (February 27, 1891 in Lundar, Manitoba – 1956) was a politician in Manitoba, Canada. He served in the Legislative Assembly of Manitoba as a Liberal-Progressive from 1945 until his death.
Halldorson's parents emigrated from Iceland to Canada four years before his birth. Halldorson was educated at the Manitoba Agricultural College, and worked as an insurance agent. During World War I, he served with the 107th Battalion C.E.F. and 3rd Canadian Engineers from February 1915 to May 9, 1919, and was stationed in France from 1917 to 1919.
He was first elected to the Manitoba legislature in the 1945 provincial election, defeating Eric Stefanson by 258 votes in the St. George constituency. He was re-elected by acclamation in the 1949 election, and easily defeated a Social Credit opponent in 1953. He died three years later, while still a member of the legislature.
Unlike most Liberal-Progressive backbenchers, Halldorson supported the CCF's proposals for pension reform in 1955.