| 57th Congress (LVII Legislatura) | |
| Body: | Congress of the Union |
| Meeting Place: | Legislative Palace of San Lázaro (Deputies/General Congress) Casona de Xicoténcatl (Senators) |
| Election: | 6 July 1997 |
| Before: | 56th |
| After: | 58th |
| Chamber1: | Senate of the Republic |
| Chamber1 Image: | File:LVII Legislatura de México Cámara del Senado.svg |
| Membership1: | 128 |
| Chamber2: | Chamber of Deputies |
| Chamber2 Image: | File:LVII Legislatura de México Cámara de Diputados.svg |
| Membership2: | 500 |
| Session1 End: | --> |
The LVII Legislature (57th session) of the Congress of Mexico met from 1997 to 2000.
It was the first session in 68 years where the Institutional Revolutionary Party (PRI) did not hold an absolute majority over opposition parties in the Chamber of Deputies.[1] The National Action Party (PAN), the Party of the Democratic Revolution (PRD), the Labor Party (PT), the Ecologist Green Party of Mexico (PVEM), and two independents combined for 261 of the 500 seats.[2]