Simon Santoso is an Indonesian former badminton player. He was two-time SEA Games men's singles champion winning in 2009 and 2011, also featured in Indonesia team that won the men's team title in 2003, 2007, 2009, and 2011. Santoso won the Indonesia Open a Superseries Premier tournament in 2012. He reached a career high as world number 3 in August 2010.

Badminton at the 2005 SEA Games was held at the PhilSports Arena at the Philippine Sports Commission Complex in Pasig, Philippines. Participants competed for 5 gold medals in the individual events and 2 gold medals in the team events.