Robert Byrne (February 4, 1886 – December 31, 1967) was a North Dakota Republican Party politician who served as the Secretary of State of North Dakota from 1925 to 1934.
He first won election to the Secretary of State position in 1924, and served until he was defeated by James D. Gronna in the 1934 Republican Primary.
In 1930, when the Capitol building was on fire, Byrne was able to save an original copy of the state Constitution from fire, suffering cuts and burns in the process.
He died in Bismarck, North Dakota at the age of 81 in 1967.
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