Luxembourg competed at the 2014 Summer Youth Olympics, in Nanjing, China from 16 August to 28 August 2014.
Medals awarded to participants of mixed-NOC (Combined) teams are represented in italics. These medals are not counted towards the individual NOC medal tally.
Luxembourg qualified one athlete.
<small>Qualification Legend: Q=Final A (medal); qB=Final B (non-medal); qC=Final C (non-medal); qD=Final D (non-medal); qE=Final E (non-medal)</small>
Luxembourg was given a quota to compete by the tripartite committee.
Luxembourg qualified two swimmers.