Armenia participated at the 2018 Summer Youth Olympics in Buenos Aires, Argentina from 6 October to 18 October 2018.
Medals awarded to participants of mixed-NOC teams are represented in italics. These medals are not counted towards the individual NOC medal tally.
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Armenia qualified one rhythmic gymnast based on its performance at the European qualification event.
Armenia qualified one sport shooter based on its performance at the 2018 European Championships.
Armenia qualified one athlete based on its performance at the 2017 World Youth Championships.
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