1st Mixed Brigade
| 1st Mixed Brigade Primera Brigada Mixta  | |
|---|---|
Flag of the 11th Division of the Popular Army of the Spanish Republic of which the 1st Mixed Brigade was a part  | |
| Active | 10 October 1936 – 9 February 1939 | 
| Country | Spain | 
| Branch | Spanish Republican Army | 
| Type | Mixed Brigade | 
| Role | Home Defence | 
| Size | Four battalions:  The 1st, 2nd, 3rd and 4th  | 
| Part of | 11th Division (1936–1939) | 
| Garrison/HQ | Madrid | 
| Nickname(s) | Brigada Lister | 
| Engagements | Spanish Civil War | 
| Commanders | |
| Notable commanders  | Enrique Líster | 
The First Mixed Brigade (Spanish: 1.ª Brigada Mixta), also known as Brigada Lister, was a mixed brigade of the Spanish Republican Army in the Spanish Civil War. It was disbanded on 9 February 1939.