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The judo competition at the 1973 Southeast Asian Peninsular Games was held between 4 and 7 September at Chung Cheng High School.

Event	Gold	Silver	Bronze
Bantamweight	Montri Chomsakorn	Nguyen Xuan Khang	Low Chee Kiang
Lightweight	Tan Sin Aun	Thao Ty	M.T. Veloo
Light Middleweight	Somnuk Kitisathorn	Bouakeo Daoleuang	Truong Duc Hieu
Middleweight	Wong Kin Jong	R. Somkhit	Thach Cam Tong
Light Heavyweight	Nordin Hamzah	Manmoham Singh	Kavi Lurogvirujkul
Heavyweight	Kan Kwok Toh	Vithaya Tarnpien	Sarban Singh
Open	Choo Kah Wah	Thao Sien	Musa Yassin

Rank	Nation	Gold	Silver	Bronze	Total
1	Singapore (SIN)	4	1	1	6
2	Thailand (THA)	2	1	1	4
3	Malaysia (MAS)	1	0	3	4
4	Laos (LAO)	0	4	0	4
5	South Vietnam (VNM)	0	1	2	3
Totals (5 entries)		7	7	7	21

• "Yesterday's Seap results". The Straits Times. 5 September 1973. p. 24 – via NewspapersSG.
• "Kin Jong destroys rivals with 'uchimara'". The Straits Times. 6 September 1973. p. 24 – via NewspapersSG.
• "Yesterday's Seap results". The Straits Times. 7 September 1973. p. 24 – via NewspapersSG.