Papua New Guinea competed at the 2004 Summer Olympics in Athens, Greece, from 13 to 29 August 2004.

Papua New Guinean athletes have so far achieved qualifying standards in the following athletics events (up to a maximum of 3 athletes in each event at the 'A' Standard, and 1 at the 'B' Standard).^[2][3]

Men

Women

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

Papua New Guinean swimmers earned qualifying standards in the following events (up to a maximum of 2 swimmers in each event at the A-standard time, and 1 at the B-standard time):

Men

Papua New Guinea has qualified a single weightlifter.