Tennis at the 2018 Summer Youth Olympics – Boys' singles

These are the results for the boys' singles event at the 2018 Summer Youth Olympics.

Seeds
• # (quarterfinals)

• # (quarterfinals)

• # ' (gold medallist')

• # (first round)

• # (first round)

• # (semifinals, retired, fourth place)

• # (semifinals, bronze medallist)

• # (final, silver medallist)