Liechtenstein competed at the 2008 Summer Olympics, held in Beijing, People's Republic of China. The National Olympic Committee of Liechtenstein nominated two athletes for the games. Stephanie Vogt (Tennis) was previously nominated but had to withdraw because of an injury.
- 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