Guinea-Bissau at the 2004 Summer Olympics

Athletics

• 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

Wrestling

• - Victory by Fall.
• - Decision by Points - the loser with technical points.
• - Decision by Points - the loser without technical points.