| Conflict: | Texas Campaign |
| Partof: | the Mexican–American War |
| Date: | 25 April – 9 May 1846 |
| Place: | Texas, United States |
| Result: | American Victory |
| Combatant1: |  United States |
| Combatant2: |  Mexico |
| Commander1: | Zachary Taylor Seth Thornton Jacob Brown |
| Commander2: | Mariano Arista Anastasio Torrejón |
| Strength1: | 2,400 (May) |
| Strength2: | 4,000 (May) |
| Casualties1: | 60 killed 149 wounded |
| Casualties2: | 335 killed 336 wounded |
The Texas Campaign was the first front in the Mexican–American War, fought between the United States and Mexico. The front started with a Mexican assault near Brownsville. US forces were forced to surrender after hours of resisting, which led President James K. Polk to declare war on Mexico. After the United States defeated a larger Mexican Army at Palo Alto and Resaca de la Palma, Mexican Forces led by Mariano Arista retreated out of Texas.