Alejandra Purisina Ramos Sánchez (born December 8, 1958) is a retired female middle-distance runner from Chile. She competed for her native South American country at the 1984 Summer Olympics in Los Angeles, California. Ramos obtained a personal best time of 4:13.07 in the 1,500 metres event in 1990.
| Year | Tournament | Venue | Result | Event |
|---|---|---|---|---|
| 1975 | South American Championships | Rio de Janeiro, Brazil | 1st | 200 metres |
| 3rd | 400 metres | |||
| 1977 | South American Championships | Montevideo, Uruguay | 1st | 800 metres |
| 1st | 1,500 metres | |||
| 1979 | South American Championships | Bucaramanga, Colombia | 1st | 800 metres |
| 1st | 1,500 metres | |||
| 1983 | South American Championships | Santa Fe, Argentina | 1st | 800 metres |
| 1st | 1,500 metres | |||
| Pan American Games | Caracas, Venezuela | 3rd | 800 metres | |
| 1984 | Olympic Games | Los Angeles, United States | DNQ | 800 metres |
| DNQ | 1,500 metres | |||
| 1985 | South American Championships | Santiago, Chile | 1st | 800 metres |
| 1st | 1,500 metres | |||
| 1993 | South American Championships | Lima, Peru | 2nd | 1,500 metres |
| 3rd | 3,000 metres |