| Election Name: | 1938 Oklahoma gubernatorial election |
| Country: | Oklahoma |
| Flag Year: | 1925 |
| Type: | presidential |
| Ongoing: | no |
| Previous Election: | 1934 Oklahoma gubernatorial election |
| Previous Year: | 1934 |
| Next Election: | 1942 Oklahoma gubernatorial election |
| Next Year: | 1942 |
| Election Date: | November 8, 1938 |
| Image1: | File:Leon_Phillips_1938 (cropped).jpg |
| Nominee1: | Leon C. Phillips |
| Party1: | Democratic Party (United States) |
| Popular Vote1: | 355,740 |
| Percentage1: | 70.0% |
| Nominee2: | Ross Rizley |
| Party2: | Republican Party (United States) |
| Popular Vote2: | 148,861 |
| Percentage2: | 29.3% |
| Map Size: | 300px |
| Governor | |
| Before Election: | E. W. Marland |
| Before Party: | Democratic Party (United States) |
| After Election: | Leon C. Phillips |
| After Party: | Democratic Party (United States) |
The 1938 Oklahoma gubernatorial election was held on November 8, 1938, and was a race for Governor of Oklahoma. Democrat Leon 'Red' Phillips defeated Republican former State Senator Ross Rizley. Also on the ballot were John Wesley Lanham of the Prohibition Party and Independent John Franing.[1] This election is the last time an alternative party has had a primary for governor in Oklahoma, as the Prohibitionists chose Francis Simpson over Ralph Butterfield, but Simpson then withdrew and the party placed Lanham on the ballot as a replacement.[2]
Nine candidates vied for the Democratic nomination, including former governors Alfalfa Bill Murray and Jack C. Walton. With the elimination of the runoff primary, Oklahoma House of Representatives Speaker Red Phillips eked out a narrow win over W. S. Key.
Future Congressman Ross Rizley defeated two challengers by a wide margin to claim the GOP nomination.
Francis Simpson defeated Ralph Butterfield in the primary but then withdrew. John Wesley Lanham of Bethany was named as a replacement candidate. This was the only alternative party gubernatorial primary in Oklahoma until 2018.