The Boys Singles tournament of the 2012 BWF World Junior Championships was held from October 30 until November 3. Zulfadli Zulkiffli from Malaysia is the last edition winner.

Japanese Kento Momota clinched the title after beating Chinese Xue Song in the thrilling final match by 21–17, 19–21, 21–19.

	Quarterfinals							Semifinals							Final
	1	Viktor Axelsen	19	21	17
	9/16	Xue Song	21	13	21
								9/16	Xue Song	21	21
									Hsu Jui-ting	12	7
		Hsu Jui-ting	21	21
	9/16	Panji Akbar Sudrajat	17	13
															9/16	Xue Song	17	21	19
															2	Kento Momota	21	19	21
		Chong Yee Han	21	11
		Heo Kwang-hee	23	21
									Heo Kwang-hee	17	8
								2	Kento Momota	21	21
	5/8	Soo Teck Zhi	12	11
	2	Kento Momota	21	21

	First round							Second round							Third round							Fourth round
								1	V Axelsen	21	21
									Tang CM	11	17
															1	V Axelsen	21	21
		B Appakhodjaev	3	7												Tan KM	12	15
		R Walker	21	21					R Walker	19	19
		Tan KM	21	21					Tan KM	21	21
		A Zinukhov	14	10																		1	V Axelsen	21	21
																						9/16	J Dolan	10	11
								9/16	J Dolan	21	21
									R Pedrosa	8	12
															9/16	J Dolan	21	21
		E Sesalan	17	20												P Cajot	16	12
		P Cajot	21	21					P Cajot	21	23
		V Kukulage	11	13					Pham HN	13	21
		Pham HN	21	21

	First round							Second round							Third round							Fourth round
								5/8	R Yadav	14	21	21
									D Guda	21	18	8
															5/8	R Yadav	21	21
		C Coetzer	6	9												F Hadmadi	11	15
		A D'Souza	21	21					A D'Souza	12	14
		K Nishimoto	19	20					F Hadmadi	21	21
		F Hadmadi	21	22																		5/8	R Yadav	10	12
																						9/16	Xue S	21	21
								9/16	Xue S	21	21
		J Korhonen	21	21					J Korhonen	6	13
		D Delchev	14	13											9/16	Xue S	21	21
		Hung C-c	18	11												Jung J-w	8	13
		Jung J-w	21	21					Jung J-w	21	21
		J Kuo	21	17	10				A Namkul	16	12
		A Namkul	19	21	21

	First round							Second round							Third round							Fourth round
								3/4	Soong JV	21	21
									F Deblois-Beaucage	9	12
															3/4	Soong JV	15	10
		K Jacobs	12	14												Hsu J-t	21	21
		S Garev	21	21					S Garev	18	11
		K Avsar	11	17					Hsu J-t	21	21
		Hsu J-t	21	21																			Hsu J-t	21	21
																						9/16	A Mendrek	10	14
								9/16	A Mendrek	21	21	22
									V de Vries	13	23	20
															9/16	A Mendrek	21	21
		S Sirant	14	21	10											A Lane	19	16
		A Lane	21	15	21				A Lane	14	21	21
		S van den Broeck	15	17					Do TD	21	14	12
		Do TD	21	21

	First round							Second round							Third round							Fourth round
								5/8	T Sitthikom	19	16
									A Koga	21	21
																A Koga	21	21
		S Lee	14	19												A Joshi	15	11
		A Joshi	21	21					A Joshi	21	21
		D Stipsits	21	21					D Stipsits	16	16
		B Goonathileka	19	19																			A Koga	21	19	19
																						9/16	P Sudrajat	12	21	21
								9/16	P Sudrajat	23	21
		Seo S-j	21	14	24				Seo S-j	21	11
		I Heino	14	21	22										9/16	P Sudrajat	21	21
		F Roth	21	21												Chang TC	15	16
		J Monterubio	16	19					F Roth	19	13
		Chang TC	21	21					Chang TC	21	21
		J Forsberg	7	18

	First round							Second round							Third round							Fourth round
		Y Kobayashi	21	21
		V Shishkov	11	14					Y Kobayashi	21	21
		N Osborne	8	7					Lu C-h	16	18
		Lu C-h	21	21												Y Kobayashi	11	21	12
		Chong YH	21	21												Chong YH	21	17	21
		S Serasinghe	13	10					Chong YH	21	21
								9/16	K Koljonen	11	7
																							Chong YH	21	21
		A Dolotov	15	21	15																	5/8	Ng KL	15	18
		J Teeuwen	21	19	21				J Teeuwen	21	21
		J Magee	21	21					J Magee	17	15
		A Shekhtman	15	18												J Teeuwen	7	16
															5/8	Ng KL	21	21
									R Ng	14	15
								5/8	Ng KL	21	21

	First round							Second round							Third round							Fourth round
		M Alcala	13	21	21
		S Zorlu	21	13	19				M Alcala	16	8
		P Joshi	21	21					P Joshi	21	21
		D Young	11	12												P Joshi	23	14	22
		A Savatyugin	7	8											9/16	T Mahbub	21	21	20
		L Schaenzler	21	21					L Schaenzler	9	9
								9/16	T Mahbub	21	21
																							P Joshi	22	16	16
		A Truskalov	19	22																			Heo K-h	20	21	21
		M Svetnicka	21	24					M Svetnicka	10	16
		Zhou YJ	19	12					R Noes	21	21
		R Noes	21	21												R Noes	12	18
																Heo K-h	21	21
									Heo K-h	16	21	21
								3/4	K Phetpradab	21	17	19

	First round							Second round							Third round							Fourth round
		H Dani	21	21
		A Malan	12	14					H Dani	19	21	21
		J Janacek	21	21					J Janacek	21	18	11
		A Bakhshullaev	13	13												H Dani	21	21
		A Selladurai	21	16	19										9/16	M Almer	19	13
		W Cheung	14	21	21				W Cheung	14	14
								9/16	M Almer	21	21
																							H Dani	13	21	15
		C Nilsson	21	15	21																	5/8	Soo TZ	21	19	21
		T Wolfenden	8	21	19				C Nilsson	21	20	14
		A Lodiot	12	5					M Caljouw	19	22	21
		M Caljouw	21	21												M Caljouw	21	13	10
															5/8	Soo TZ	10	21	21
									M Kosovan	8	9
								5/8	Soo TZ	21	21

	First round							Second round							Third round							Fourth round
		Guo K	21	21
		P Hettiarachchi	5	8					Guo K	21	21
		M Put	14	10					Jeon H-j	18	18
		Jeon H-j	21	21												Guo K	21	21
															9/16	Wang T-w	18	16
									P Thongnuam	21	15	16
								9/16	Wang T-w	16	21	21
																							Guo K	20	17
		K Boyarskiy	15	20																		2	K Momota	22	21
		A Ramadhan	21	22					A Ramadhan	21	21
		G Ong	21	21					G Ong	12	13
		J Pistorius	7	18												A Ramadhan	16	10
															2	K Momota	21	21
									Pham CC	20	9
								2	K Momota	22	21

• Main Draw (Archived 2013-10-28)