Indonesia was the host nation of 2018 Asian Games held in Jakarta and Palembang from 18 August to 2 September 2018. Indonesia competed with 938 athletes, the most in the Games.
Vice President of Indonesia Jusuf Kalla assigned the then-National Police Deputy Chief Commissioner General Syafruddin as chef de mission for the Indonesian contingent.
Competitors
The following is a list of the number of competitors representing Indonesia that participated at the Games:
Demonstration events
Medalists
The following Indonesia competitors won medals at the Games.
| style="text-align:left; width:78%; vertical-align:top;"|
| style="text-align:left; width:22%; vertical-align:top;"|
—
Demonstration sports medalists
eSports was featured at the 2018 Asian Games as a demonstration sport, meaning medals won in this sport will not be counted in the official overall medal tally. It was held from 26 August to 1 September. Six video game titles were featured in the demonstration event. Indonesia collected 2 medals, 1 gold and 1 silver, and finished second in the table.
The following Indonesia competitors won medals at the demonstration games.
| style="text-align:left; width:78%; vertical-align:top;"|
Archery
Recurve
Compound
Artistic swimming
* Did not play.
Athletics
Badminton
Indonesia announced its squad of 20 players (10 men's and 10 women's) on 30 June 2018.
Men
Women
Mixed
Baseball
Indonesia sent a men's team to make its debut in the baseball competition at the Asian Games. The team were drawn in the group B alongside Hong Kong, South Korea and Chinese Taipei.
Roster
The following is the Indonesia roster for the men's baseball tournament of the 2018 Asian Games.
Round 2 – Group B
Consolation round
Basketball
Summary
5x5 basketball
Indonesia men's and women's basketball team entered the competition, drawn in group A for the men's and in group X for the women's.
Men's tournament
Roster
The following is the Indonesia roster in the men's basketball tournament of the 2018 Asian Games.
Group A
Quarter-final
Classification 5th–8th
Seventh place game
Women's tournament
Roster
The following is the Indonesia roster in the women's basketball tournament of the 2018 Asian Games.
Group X
Quarter-final
Classification 5th–8th
Seventh place game
3x3 basketball
Indonesia national 3x3 team will participate in the Games. The men's team placed in pool B and the women's team in pool D based on the FIBA 3x3 federation ranking.
Men's tournament
Roster
The following is the Indonesia roster in the men's 3x3 basketball tournament of the 2018 Asian Games. Erick Jonathan Gosal Rivaldo Tandra Pangesthio Vincent Rivaldi Kosasih Agassi Yeshe Goantara
Pool A
Women's tournament
Roster
The following is the Indonesia roster in the women's 3x3 basketball tournament of the 2018 Asian Games. Christine Apriyani Rumambi Dewa Ayu Made Sriartha Kusuma Delaya Maria Ni Putu Eka Liana Febiananda
Pool D
Quarter-final
Bowling
Men
Women
Boxing
Men
Women
Canoeing
Slalom
Sprint
Qualification legend: QF=Final; QS=Semifinal
Traditional boat race
Men
Women
Canoe polo (demonstration)
Contract bridge
Men
Women
Mixed
Cycling
BMX
Mountain biking
Indonesia downhill bikers entered the competition with 4 athletes. Two men's athletes Popo Ario Sejati and Khoiful Muhkib was a national downhill champion, and for the women's athletes Nining Purwaningsih dan Tiara Andini Prastika was a second and third place at the 2017 Asian Mountain Biking Championships in Xuancheng, China.
Road
Track
Sprint
Team sprint
Riders who entered the competition but did not participating in any phase of the team event. Qualification legend: FA=Gold medal final; FB=Bronze medal final
Pursuit
Riders who entered the competition but did not participating in any phase of the team event. Qualification legend: FA=Gold medal final; FB=Bronze medal final