# Guinea-Bissau at the 2020 Summer Olympics

Guinea-Bissau competed at the 2020 Summer Olympics in Tokyo. Originally scheduled to take place from 24 July to 9 August 2020, the Games were postponed to 23 July to 8 August 2021, because of the COVID-19 pandemic. It was the nation's seventh consecutive appearance at the Summer Olympics.

## Competitors

The following is the list of number of competitors in the Games.
| Sport | Men | Women | Total |
| Athletics | 1 | 0 | 1 |
| Judo | 0 | 1 | 1 |
| Wrestling | 2 | 0 | 2 |
| Total | 3 | 1 | 4 |

## Athletics

Guinea-Bissau received universality slots from World Athletics to send two athletes (one male and one female).

### Key

* Note–Ranks given for track events are within the athlete's heat only
* Q = Qualified for the next round
* q = Qualified for the next round as a fastest loser or, in field events, by position without achieving the qualifying target
* NR = National record
* N/A = Round not applicable for the event
* Bye = Athlete not required to compete in round

### Track & road events

| Athlete | Event | Heat | Heat | Quarterfinal | Quarterfinal | Semifinal | Semifinal | Final | Final |
| Athlete | Event | Result | Rank | Result | Rank | Result | Rank | Result | Rank |
| Seco Camara | Men's 100 m | 11.33 PB | 7 | Did not advance | Did not advance | Did not advance | Did not advance | Did not advance | Did not advance |

## Judo

Guinea-Bissau qualified one judoka for the women's half-lightweight category (52 kg). Rio 2016 Olympian Taciana Cesar received an African continental quota as the nation's top-ranked judoka outside of direct qualifying position on the IJF World Ranking List of June 28, 2021.
| Athlete | Event | Round of 32 | Round of 16 | Quarterfinals | Semifinals | Repechage | Final / BM | Final / BM |
| Athlete | Event | Opposition Result | Opposition Result | Opposition Result | Opposition Result | Opposition Result | Opposition Result | Rank |
| Taciana Cesar | Women's –52 kg | Park D-s (KOR) L 00–11 | Did not advance | Did not advance | Did not advance | Did not advance | Did not advance | Did not advance |

## Wrestling

Guinea-Bissau qualified two male freestyle wrestlers, both of whom progressed to the top two of their respective events at the 2021 African & Oceania Qualification Tournament in Hammamet, Tunisia.
Key:
* VT (ranking points: 5–0 or 0–5) – Victory by fall.
* VB (ranking points: 5–0 or 0–5) – Victory by injury (VF for forfeit, VA for withdrawal or disqualification)
* PP (ranking points: 3–1 or 1–3) – Decision by points – the loser with technical points.
* PO (ranking points: 3–0 or 0–3) – Decision by points – the loser without technical points.
* ST (ranking points: 4–0 or 0–4) – Great superiority – the loser without technical points and a margin of victory of at least 8 (Greco-Roman) or 10 (freestyle) points.
* SP (ranking points: 4–1 or 1–4) – Technical superiority – the loser with technical points and a margin of victory of at least 8 (Greco-Roman) or 10 (freestyle) points.

### Men

| Athlete | Event | Round of 16 | Quarterfinal | Semifinal | Repechage | Final / BM | Final / BM |
| Athlete | Event | Opposition Result | Opposition Result | Opposition Result | Opposition Result | Opposition Result | Rank |
| Diamantino Iuna Fafé | −57 kg | Sanayev (KAZ) L 0–3 $^{PO}$ | Did not advance | Did not advance | Did not advance | Did not advance | 15 |
| Augusto Midana | −74 kg | Sidakov (ROC) L 1–4 $^{SP}$ | Did not advance | Did not advance | Abdurakhmonov (UZB) L 0–4 $^{ST}$ | Did not advance | 11 |