See also: New Mexico's at-large congressional district.
| Election Name: | 1938 United States House election in New Mexico |
| Country: | New Mexico |
| Type: | presidential |
| Ongoing: | no |
| Previous Election: | 1936 United States House of Representatives election in New Mexico |
| Previous Year: | 1936 |
| Next Election: | 1940 United States House of Representatives election in New Mexico |
| Next Year: | 1940 |
| Election Date: | November 8, 1938 |
| Image1: | John J. Dempsey.jpg |
| Nominee1: | John J. Dempsey |
| Party1: | Democratic Party (United States) |
| Popular Vote1: | 90,608 |
| Percentage1: | 58.4% |
| Nominee2: | Peace C. Rodney |
| Party2: | Republican Party (United States) |
| Popular Vote2: | 64,281 |
| Percentage2: | 41.4% |
| Map Size: | 215px |
| Representative At-large | |
| Before Election: | John J. Dempsey |
| Before Party: | Democratic Party (United States) |
| After Election: | John J. Dempsey |
| After Party: | Democratic Party (United States) |
The 1938 United States House of Representatives election in New Mexico was held on Tuesday November 8, 1938 to elect the state's at-large member to serve in the United States House of Representatives in the 76th United States Congress. This election coincided with other state and local offices such as the Governor election. John Dempsey ran for re-election to a third term and won by 16.97 percentage points. He outperformed John E. Miles in the governor race by 12.32%.