Donald-Aik Sild (born October 3, 1968 in Tallinn, Harju) is a retired male javelin thrower from Estonia, who represented his native country at the 1996 Summer Olympics in Atlanta, Georgia. He set his personal best (85.28 metres) on June 11, 1994 in Saint-Denis, France.
| Year | Competition | Venue | Position | Notes |
|---|---|---|---|---|
| Representing Estonia | ||||
| 1994 | European Championships | Helsinki, Finland | 12th | 75.38 m |
| 1995 | World Championships | Gothenburg, Sweden | — | NM |
| 1996 | Olympic Games | Atlanta, United States | 30th | 72.54 m |