2012 Keio Challenger – Doubles

Yang Tsung-hua and Yi Chu-huan won the last edition in 2009.
Prakash Amritraj and Philipp Oswald won the title, defeating Sanchai Ratiwatana and Sonchat Ratiwatana 6–3, 6–4 in the final.

	First round							Quarterfinals							Semifinals							Final
	1	Sa Ratiwatana So Ratiwatana	7	77
	WC	Koki Takada Takashi Yano	5	63				1	Sa Ratiwatana So Ratiwatana	6	77
		B Mitchell M Reid	5	6	[6]				S Fransen J Millman	2	60
		Stephan Fransen J Millman	7	4	[10]										1	Sa Ratiwatana So Ratiwatana	6	710
	4	B Klein D Propoggia	6	77											4	B Klein D Propoggia	3	68
	WC	Daiki Kondo K Uchida	0	65				4	B Klein D Propoggia	6	6
		H Moriya Y Uchiyama	3	2					M Bašić L-c Huang	1	2
		M Bašić L-c Huang	6	6																		1	Sa Ratiwatana So Ratiwatana	3	4
		T Chen A Kudryavtsev	0	2																		PR	P Amritraj P Oswald	6	6
	PR	P Amritraj P Oswald	6	6				PR	P Amritraj P Oswald	5	6	[10]
		H Kondo C-h Yi	6	77					H Kondo C-h Yi	7	4	[6]
	3	P Raja D Sharan	3	64											PR	P Amritraj P Oswald	6	6
		Andrea Arnaboldi M Viola	6	6												A Arnaboldi M Viola	1	4
	WC	T Matsui Masato Shiga	4	4					A Arnaboldi M Viola	67	6	[10]
		C-p Hsieh C Rungkat	4	4				2	H-h Lee H-y Peng	79	4	[7]
	2	H-h Lee H-y Peng	6	6

• Main draw