Luxembourg competed at the 1988 Summer Olympics in Seoul, South Korea.
Competitors
The following is the list of number of competitors in the Games.
{| class="wikitable sortable" style="text-align:center;"
|-
! width=180|Sport
! width=55|Men
! width=55|Women
! width=55|Total
|-
| align=left|Archery
| 0 || 1 || 1
|-
| align=left|Athletics
| 2 || 1 || 3
|-
| align=left|Shooting
| 2 || 0 || 2
|-
| align=left|Swimming
| 1 || 1 || 2
|-
! Total || 5 || 3 || 8
|}
Results by event
Archery
In its fourth appearance in Olympic archery, Luxembourg was represented by one woman.
Women's Individual Competition:
{| class="wikitable" style="font-size:90%"
! rowspan="2" |Athlete
! rowspan="2" |Event
! colspan="2" |Ranking round
!Round of 64
!Round of 32
!Round of 16
!Quarterfinals
!Semifinals
! colspan="2" |Final /
|- style="font-size:95%"
!Score
!Seed
!Opposition
Score
!Opposition
Score
!Opposition
Score
!Opposition
Score
!Opposition
Score
!Opposition
Score
!Rank
|- align="center"
| align="left" |Ilse Martha Ries-Hotz
| align="left" |Women's Individual
|1187
|48
| colspan="7" |Did not advance
|}
Athletics
Men's Marathon
{| class="wikitable" style="font-size:90%"
! rowspan="2" |Athlete
! rowspan="2" |Event
! colspan="2" |Final
|- style="font-size:95%"
!Result
!Rank
|- align="center"
| align="left" |Justin Gloden
| align="left" |Marathon
|2:22.14
|36
|}
Men's 20 km Walk
{| class="wikitable" style="font-size:90%"
! rowspan="2" |Athlete
! rowspan="2" |Event
! colspan="2" |Final
|- style="font-size:95%"
!Result
!Rank
|- align="center"
| align="left" |Marc Sowa
| align="left" |20km Walk
| colspan="2" |DQ
|}
Women's Marathon
{| class="wikitable" style="font-size:90%"
! rowspan="2" |Athlete
! rowspan="2" |Event
! colspan="2" |Final
|- style="font-size:95%"
!Result
!Rank
|- align="center"
| align="left" |Danièle Kaber
| align="left" |Marathon
|2:29.23
|7
|}
Swimming
Men's 50m Freestyle
{| class="wikitable" style="font-size:90%"
! rowspan="2" |Athlete
! rowspan="2" |Event
! colspan="2" |Heat
! colspan="2" |Semifinal
! colspan="2" |Final
|- style="font-size:95%"
!Time
!Rank
!Time
!Rank
!Time
!Rank
|- align="center"
| align="left" |Yves Clausse
| align="left" |50m Freestyle
|23.99
|28
| colspan="4" |Did not advance
|}
Men's 100m Freestyle
{| class="wikitable" style="font-size:90%"
! rowspan="2" |Athlete
! rowspan="2" |Event
! colspan="2" |Heat
! colspan="2" |Semifinal
! colspan="2" |Final
|- style="font-size:95%"
!Time
!Rank
!Time
!Rank
!Time
!Rank
|- align="center"
| align="left" |Yves Clausse
| align="left" |100m Freestyle
|52.27
|35
| colspan="4" |Did not advance
|}
Men's 200m Freestyle
{| class="wikitable" style="font-size:90%"
! rowspan="2" |Athlete
! rowspan="2" |Event
! colspan="2" |Heat
! colspan="2" |Semifinal
! colspan="2" |Final
|- style="font-size:95%"
!Time
!Rank
!Time
!Rank
!Time
!Rank
|- align="center"
| align="left" |Yves Clausse
| align="left" |200m Freestyle
|1:45.90
|38
| colspan="4" |Did not advance
|}
<br>
Women's 100m Breaststroke
{| class="wikitable" style="font-size:90%"
! rowspan="2" |Athlete
! rowspan="2" |Event
! colspan="2" |Heat
! colspan="2" |Semifinal
! colspan="2" |Final
|- style="font-size:95%"
!Time
!Rank
!Time
!Rank
!Time
!Rank
|- align="center"
| align="left" |Nancy Arendt
| align="left" |100m Freestyle
|1:14.99
|29
| colspan="4" |Did not advance
|}
Women's 200m Breaststroke
{| class="wikitable" style="font-size:90%"
! rowspan="2" |Athlete
! rowspan="2" |Event
! colspan="2" |Heat
! colspan="2" |Semifinal
! colspan="2" |Final
|- style="font-size:95%"
!Time
!Rank
!Time
!Rank
!Time
!Rank
|- align="center"
| align="left" |Nancy Arendt
| align="left" |200m Freestyle
| colspan="2" |DQ
| colspan="4" |Did not advance
|}