# Costa Rica at the 1988 Summer Olympics

Costa Rica competed at the 1988 Summer Olympics in Seoul, South Korea. Silvia Poll won the nation's first Olympic medal, a silver.

## Medalists

| Medal | Name | Sport | Event | Date |
| Silver | Silvia Poll | Swimming | Women's 200 metre freestyle | 21 September |

## Competitors

The following is the list of number of competitors in the Games.
| Sport | Men | Women | Total |
| Athletics | 3 | 1 | 4 |
| Boxing | 1 | – | 1 |
| Judo | 1 | – | 1 |
| Shooting | 1 | 0 | 1 |
| Swimming | 2 | 6 | 8 |
| Weightlifting | 1 | – | 1 |
| Total | 9 | 7 | 16 |

## Athletics
### Track and road events

| Athlete | Event | Final | Final |
| Athlete | Event | Time | Rank |
| Juan Amores | Marathon | 2:24:49 | 45 |
| Ronald Lanzoni | Marathon | 2:23:45 | 40 |
| Luis López | Marathon | 2:32:43 | 68 |

### Track and road events

| Athlete | Event | Heat | Heat | Semifinal | Semifinal | Final | Final |
| Athlete | Event | Time | Rank | Time | Rank | Time | Rank |
| Maureen Stewart | 800 metres | 2:08.17 | 26 | Did not advance | Did not advance | Did not advance | Did not advance |

## Boxing

| Athlete | Event | Round of 64 | Round of 32 | Round of 16 | Quarterfinals | Semifinals | Final | Final |
| Athlete | Event | Opposition Result | Opposition Result | Opposition Result | Opposition Result | Opposition Result | Opposition Result | Rank |
| Humberto Aranda | Welterweight | Bye | Naea (SAM) W RSC R2 | Dydak (POL) L 1–4 | Did not advance | Did not advance | Did not advance | Did not advance |

## Judo

| Athlete | Event | Round of 64 | Round of 32 | Round of 16 | Quarterfinals | Semifinals | Repechage | Repechage | Repechage | Final | Final |
| Athlete | Event | Round of 64 | Round of 32 | Round of 16 | Quarterfinals | Semifinals | Round 1 | Round 2 | Round 3 | Final | Final |
| Athlete | Event | Opposition Result | Opposition Result | Opposition Result | Opposition Result | Opposition Result | Opposition Result | Opposition Result | Opposition Result | Opposition Result | Rank |
| Henry Núñez | 71 kg | Bye | Dahlin (SWE) L Koka | Did not advance | Did not advance | Did not advance | Did not advance | Did not advance | Did not advance | Did not advance | Did not advance |

## Shooting
### Men

| Athlete | Event | Qualification | Qualification | Final | Final |
| Athlete | Event | Points | Rank | Points | Rank |
| Mariano Lara | 10 m air pistol | 563 | 42 | Did not advance | Did not advance |

## Swimming
### Men

| Athlete | Event | Heats | Heats | Final A/B | Final A/B |
| Athlete | Event | Time | Rank | Time | Rank |
| Eric Greenwood | 100 m backstroke | 1:03.11 | 45 | Did not advance | Did not advance |
| Eric Greenwood | 200 m backstroke | 2:15.42 | 35 | Did not advance | Did not advance |
| Eric Greenwood | 200 m individual medley | 2:15.64 | 43 | Did not advance | Did not advance |
| Horst Niehaus | 100 m backstroke | 1:01.91 | 42 | Did not advance | Did not advance |
| Horst Niehaus | 200 m backstroke | 2:12.83 | 34 | Did not advance | Did not advance |
| Horst Niehaus | 200 m individual medley | 2:16.16 | 44 | Did not advance | Did not advance |

### Women

| Athlete | Event | Heats | Heats | Final A/B | Final A/B |
| Athlete | Event | Time | Rank | Time | Rank |
| Natasha Aguilar | 200 m freestyle | 2:10.22 | 34 | Did not advance | Did not advance |
| Marcela Cuesta | 100 m butterfly | 1:07.66 | 33 | Did not advance | Did not advance |
| Montserrat Hidalgo | 100 m breaststroke | 1:18.42 | 36 | Did not advance | Did not advance |
| Montserrat Hidalgo | 200 m breaststroke | 2:44.72 | 37 | Did not advance | Did not advance |
| Carolina Mauri | 50 m freestyle | 27.96 | 33 | Did not advance | Did not advance |
| Carolina Mauri | 100 m freestyle | 1:00.14 | 41 | Did not advance | Did not advance |
| Sigrid Niehaus | 100 m breaststroke | 1:16.65 | 35 | Did not advance | Did not advance |
| Sigrid Niehaus | 200 m breaststroke | 2:45.35 | 38 | Did not advance | Did not advance |
| Sylvia Poll | 100 m freestyle | 56.16 | 5 FA | 55.90 | 5 |
| Sylvia Poll | 200 m freestyle | 1:59.22 | 2 FA | 1:58.67 | |
| Sylvia Poll | 100 m backstroke | 1:03.21 | 6 FA | 1:03.34 | 6 |
| Natasha Aguilar Marcela Cuesta Carolina Mauri Sylvia Poll | 4 × 100 m freestyle relay | 3:59.67 | 12 | Did not advance | Did not advance |
| Sylvia Poll Sigrid Niehaus Marcela Cuesta Carolina Mauri | 4 × 100 m medley relay | 4:31.75 | 15 | Did not advance | Did not advance |

## Weightlifting

| Athlete | Event | Snatch | Snatch | Clean & jerk | Clean & jerk | Total | Rank |
| Athlete | Event | Result | Rank | Result | Rank | Total | Rank |
| Rafael Elizondo | 82.5 kg | 117.5 | 18 | 147.5 | 16 | 265.0 | 16 |