Samuel Roy McKelvie (April 15, 1881 – January 6, 1956) was an American politician from the U.S. state of Nebraska.

[1] As Martha McKelvie, his spouse was a noted silent movie columnist, and, starting three years after his death, the author of what became a total of twenty-four books, one of them, Presidents, Politicians and People I Have Known, a memoir.

[1] McKelvie was the Republican gubernatorial nominee in 1918, and defeated Democratic incumbent Keith Neville.

[1] On April 15, 1922, a few months before leaving the governorship, McKelvie helped break ground for the current Nebraska State Capitol.

McKelvie died on January 6, 1956, at his winter home near Mesa, Arizona after suffering two heart attacks.