Amarilys Alméstica Rivera (born February 12, 1981) is a hammer thrower from San Juan, Puerto Rico. She set her personal best throw (66.57 metres) on July 3, 2006, at a meet in Ottawa, Ontario, Canada.
| Representing | |||||
|---|---|---|---|---|---|
| 2000 | San Juan, Puerto Rico | 3rd | 44.45 m | ||
| 2001 | Central American and Caribbean Championships | Guatemala City, Guatemala | 4th | 53.72 m | |
| 2002 | Ibero-American Championships | Guatemala City, Guatemala | 8th | 54.48 m | |
| San Salvador, El Salvador | 1st | 60.39 m | |||
| 2003 | Daegu, South Korea | 11th | 53.58 m | ||
| 2004 | Ibero-American Championships | Huelva, Spain | 6th | 61.99 m | |
| 2005 | Central American and Caribbean Championships | Nassau, Bahamas | 9th | 48.66 m | |
| World Championships | Helsinki, Finland | 30th (q) | 56.66 m | ||
| 2006 | Ibero-American Championships | Ponce, Puerto Rico | bgcolor=gold | 1st | 66.21 m |
| Central American and Caribbean Games | Cartagena, Colombia | 4th | 62.69 m | ||
| 2007 | NACAC Championships | San Salvador, El Salvador | 4th | 57.40 m | |
| Pan American Games | Rio de Janeiro, Brazil | 11th | 61.44 m | ||