| Headercolor: | lightblue |
| Shainer Reginfo | |
| Fullname: | Shainer Reginfo Montoya |
| Birth Date: | 2002 4, df=yes |
| Sport: | Athletics |
| Coach: | Jorge Chacón[1] |
Shainer Reginfo Montoya (born 8 April 2002) is a Cuban sprinter. He won a gold medal in the 100 metres at the 2022 Ibero-American Championships.
| Representing | ||||||
|---|---|---|---|---|---|---|
| 2021 | World U20 Championships | Nairobi, Kenya | 3rd | 100 m | 10.32 | |
| 6th | 200 m | 21.01 | ||||
| Junior Pan American Games (U23) | Cali, Colombia | – | 200 m | DQ | ||
| 2022 | Ibero-American Championships | La Nucia, Spain | bgcolor=gold | 1st | 100 m | 10.15 |
| 3rd | 200 m | 21.01 | ||||
| Caribbean Games (U23) | Le Gosier, Guadeloupe | – | 100 m | DQ | ||
| World Championships | Eugene, United States | 33rd (h) | 100 m | 10.21 | ||
| 39th (h) | 200 m | 20.80 | ||||
| NACAC Championships | Freeport, Bahamas | 6th | 100 m | 10.30 | ||
| 2023 | Central American and Caribbean Games | San Salvador, El Salvador | 12th (h) | 100 m | 10.60 | |
| 8th | 200 m | 20.97 | ||||
| Pan American Games | Santiago, Chile | 8th | 100 m | 10.44 | ||
| – | 200 m | DQ | ||||
| bgcolor=silver | 2nd | 4 × 100 m relay | 39.26 | |||