Finswimming at the 2011 SEA Games was held at the Jakabaring Sport Complex in Palembang, Indonesia from 19 to 21 November 2011.^[1]

  *   Host nation (Indonesia)

Rank	Nation	Gold	Silver	Bronze	Total
1	Indonesia*	7	8	2	17
2	Vietnam	6	5	6	17
3	Thailand	2	3	7	12
4	Philippines	1	0	1	2
Totals (4 entries)		16	16	16	48

Event	Gold	Silver	Bronze
100 m bi-fins	Nutt Wesshasartar  Thailand	Reza Novaris  Indonesia	Nguyễn Ngọc Quang  Vietnam
50 m surface	Muhammad Nurul Fajri  Indonesia	Adrian Sansoldi Lamano  Indonesia	Pawat Matjiur  Thailand
100 m surface	Nguyễn Trung Kiên  Vietnam	Phan Lưu Cẩm Thành  Vietnam	Pawat Matjiur  Thailand
200 m surface	Petrol Apostle Kambey  Indonesia	Reinhard Tommel  Indonesia	Nguyễn Trung Kiên  Vietnam
400 m surface	Trần Bảo Thu  Vietnam	Hans Yosaputra  Indonesia	Võ Quang Đại  Vietnam
800 m surface	Hans Yosaputra  Indonesia	Trần Bảo Thu  Vietnam	Đỗ Xuân Thiên  Vietnam
4 × 100 m bi-fins	Thailand Akkarawat Ruangchairit Nutt Wesshasartar Raphiphon Sornmane Sorasit Hanwiwattanakul	Indonesia Bayu Adiwibowo Christofel Keng Masengi Evan Adiputra Muhammad Nurul Fajri	Philippines Franz Garett D. Baaco Leonard Angelo N. Sabellina Matthew Earll F. Rodriguez Mike Godoy
4 × 100 m surface	Indonesia Adrian Sansoldi Lamano Bayu Adiwibowo Oktavia Riyanto Petrol Apostle Kambey	Vietnam Nguyen Trong Quan Nguyễn Trung Kiên Phan Van Tien Phan Lưu Cẩm Thành	Thailand Akkarawat Ruangchairit Panjapol Kongkhieo Pawat Matjiur Sorasit Hanwiwattanakul

Event	Gold	Silver	Bronze
100 m bi-fins	Margaretha Herawati  Indonesia	Amanita Muskarianny  Indonesia	Tassamol Petchsangroj  Thailand
50 m surface	Danielle Faith San  Philippines	Kakkanang Prapaisub  Thailand	Natanong Butthajorn  Thailand
100 m surface	Nguyen Thi Giang  Vietnam	Phan Lưu Kỳ Duyên  Vietnam	Tassamol Petchsangroj  Thailand
200 m surface	Angeline Soegianto  Indonesia	Dương Thị Huyền Trang  Vietnam	Thi Truc Linh Nguyen  Vietnam
400 m surface	Angeline Soegianto  Indonesia	Priscilia Gunawan  Indonesia	Dang Thi Minh Thuy  Vietnam
800 m surface	Nguyễn Thị Thương  Vietnam	Priscilia Gunawan  Indonesia	Seroja Mutiara Abadi  Indonesia
4 × 100 m bi-fins	Vietnam Dương Thị Huyền Trang Nguyễn Thị Quỳnh Thi Truc Linh Nguyen Võ Thị Đài Trang	Thailand Kakkanang Prapaisub Natanong Butthajorn Nutchar Theprungsirikul Tassamol Petchsangroj	Indonesia Amanita Muskarianny Delyana Fachriza Rosyadi Margaretha Herawati
4 × 100 m surface	Vietnam Dương Thị Huyền Trang Nguyễn Thị Quỳnh Nguyễn Thị Thương Phan Lưu Kỳ Duyên	Indonesia Angeline Soegianto Delyana Fachriza Rosyadi Janis Rosalita Suprianto	Thailand Kakkanang Prapaisub Natanong Butthajorn Nutchar Theprungsirikul Tassamol Petchsangroj

• 2011 Southeast Asian Games