| Election Name: | 1938 Wyoming gubernatorial election |
| Country: | Wyoming |
| Type: | presidential |
| Election Date: | November 8, 1938 |
| Ongoing: | no |
| Previous Election: | 1934 Wyoming gubernatorial election |
| Previous Year: | 1934 |
| Next Election: | 1942 Wyoming gubernatorial election |
| Next Year: | 1942 |
| Image1: | File:Gov. Nels H. Smith of Wyoming, Oct. 1939 LCCN2016876346 (1).jpg |
| Nominee1: | Nels H. Smith |
| Party1: | Republican Party (United States) |
| Popular Vote1: | 57,288 |
| Percentage1: | 59.81% |
| Party2: | Democratic Party (United States) |
| Popular Vote2: | 38,501 |
| Percentage2: | 40.19% |
| Map Size: | 250px |
| Governor | |
| Before Election: | Leslie A. Miller |
| Before Party: | Democratic Party (United States) |
| After Election: | Nels H. Smith |
| After Party: | Republican Party (United States) |
The 1938 Wyoming gubernatorial election took place on November 8, 1938. Incumbent Democratic Governor Leslie A. Miller ran for re-election to his third term, and his second full term. Nels H. Smith, a former State Representative and former state highway commissioner, won a crowded Republican primary and advanced to the general election against Miller. Though Miller won his re-election campaign four years earlier in a landslide, Smith was able to take advantage of the nationwide Republican wave to defeat him in a landslide, winning 60% of the vote to Governor Miller's 40%.