Chilean steeplechase and middle-distance runner
In this
Spanish name, the first or paternal
surname is
Ulloa and the second or maternal family name is
Valenzuela.
Emilio José Ulloa Valenzuela (born October 22, 1954) is a retired male steeplechase runner from Chile.
He represented his native country in the 1984 and 1988 Summer Olympics.
| Year | Competition | Venue | Position | Event | Notes |
Representing  Chile |
| 1977 | South American Championships | Montevideo, Uruguay | 2nd | 1500 m | 3:51.7 |
| 5th | 3000 m Steeple | 9:27.0 |
| 3rd | 4 × 400 m relay | 3:23.1 |
| 1979 | South American Championships | Bucaramanga, Colombia | 1st | 1500 m | 3:47.0 |
| 6th | 3000 m Steeple | 9:12.0 |
| 5th | 4 × 400 m relay | 3:15.6 |
| 1980 | Liberty Bell Classic | Philadelphia, United States | 9th | 1500 m | 3:51.67 |
| 1981 | South American Championships | La Paz, Bolivia | 1st | 1500 m | 4:07.1 A |
| 1st | 3000 m Steeple | 9:53.2 A |
| 2nd | 4 × 400 m relay | 3:11.8 |
| 1982 | Southern Cross Games | Santa Fe, Argentina | 2nd | 800 m | 1:50.12 |
| 1st | 1500 m | 3:46.70 |
| 1st | 3000 m Steeple | 8:50.6 |
| 1983 | Pan American Games | Caracas, Venezuela | 1st | 3000 m Steeple | 8:57.62 |
| Ibero-American Championships | Barcelona, Spain | 2nd | 3000 m Steeple | 8:37.36 |
| South American Championships | Santa Fe, Argentina | 2nd | 800 m | 1:49.2 |
| 1st | 1500 m | 3:48.3 |
| 1st | 3000 m Steeple | 8:44.6 |
| 1984 | Olympic Games | Los Angeles, United States | 17th (sf) | 3000 m Steeple | 8:28.99 |
| 1985 | World Indoor Games | Paris, France | 16th (h) | 3000 m | 8:19.96 |
| South American Championships | Santiago, Chile | 2nd | 1500 m | 3:43.63 |
| 3rd | 3000 m Steeple | 8:45.27 |
| 1986 | South American Games | Santiago, Chile | 1st | 1500 m | 3:44.21 |
| 1st | 3000 m Steeple | 8:38.49 |
| 1987 | Pan American Games | Indianapolis, United States | 4th | 3000 m Steeple | 8:37.80 |
| World Championships | Rome, Italy | 33rd (h) | 3000 m Steeple | 8:44.51 |
| South American Championships | São Paulo, Brazil | 2nd | 1500 m | 3:46.69 |
| 1st | 3000 m Steeple | 8:51.41 |
| 1988 | Olympic Games | Seoul, South Korea | – | 3000 m Steeple | DNF |
Chile 
