Ronald ("Ronaldo") Lanzoni Campos (born August 21, 1959) is a retired long-distance runner from Costa Rica. He claimed the silver medal at the 1987 Pan American Games in the Men's Marathon, and twice represented his native country at the Summer Olympics (1984 and 1988). He set his personal best (2:14.33) in the classic distance in 1987.
| Representing | ||||||
|---|---|---|---|---|---|---|
| 1984 | Los Angeles, United States | - | Marathon | |||
| 1987 | Indianapolis, United States | 2nd | Marathon | |||
| 1988 | Seoul, South Korea | 40th | Marathon | |||