Tennis at the 2015 SEA Games – Men's singles

Christopher Rungkat was the defending champions having won the event in 2011, but lost in the quarterfinals to Jeson Patrombon.

Warit Sornbutnark won the gold medal, defeating David Susanto in the final, 4–6, 6–3, 6–3. Patrombon and Bun Kenny won the bronze medals.

Seeds
• # (quarterfinals)

• # (quarterfinals)

• # (champion; gold medallist)

• # (final; silver medallist)

• # (semifinals; bronze medallist)

• # (quarterfinals)