Events at the 2021 BWF World Championships
Singles	men	women
Doubles	men	women	mixed

The men's singles tournament of the 2021 BWF World Championships took place from 12 to 19 December 2021 at the Palacio de los Deportes Carolina Marín at Huelva.^[1]

The seeding list is based on the World Rankings of 23 November 2021.^[2]

	Semi-finals							Final
		Lakshya Sen	21	14	17
	12	Srikanth Kidambi	17	21	21
								12	Srikanth Kidambi	15	20
									Loh Kean Yew	21	22
	3	Anders Antonsen	21	14
		Loh Kean Yew	23	21

	First Round							Second Round							Third Round							Quarter-finals
	1	K Momota
		M Rogalski	w	/	o
									M Rogalski	14	19
									K Cordón	21	21
		J Kweekel	18	21	16
		K Cordón	21	10	21
																K Cordón	13	8
																L Sen	21	21
	15	K Nishimoto	21	21
		Cheam J W	17	8
								15	K Nishimoto	20	21	18
									L Sen	22	15	21
		L Sen	w	/	o
		M Weißkirchen
																							L Sen	21	15	22
																							Zhao JP	15	21	20
	7	J Christie
		N Nguyen	w	/	o
									N Nguyen	21	23
									T Penty	17	21
		T J Popov
		T Penty	w	/	o
																N Nguyen	19	21	18
																Zhao JP	21	19	21
	10	Wang T-w	21	17	15
		Zhao JP	16	21	21
									Zhao JP	21	21
									K Watanabe	11	15
		A J Opeyori	11	1
		K Watanabe	21	21

	First Round							Second Round							Third Round							Quarter-finals
	4	Chou T-c	21	21
		S Thammasin	12	10
								4	Chou T-c	21	15	15
									Lu GZ	14	21	21
		K Vitidsarn	16	12
		Lu GZ	21	21
																Lu GZ	10	15
															12	S Kidambi	21	21
	12	S Kidambi	21	21
		P Abián	12	16
								12	S Kidambi	15	21	21
									Li SF	21	18	17
		Li SF	21	21
		T Lam	6	10
																						12	S Kidambi	21	21
																							M Caljouw	8	7
	5	A S Ginting
		T Rouxel	w	/	o
									T Rouxel	12	22
									B Yang	21	24
		B Yang	21	21
		B Atilano	15	8
																B Yang	20	12
																M Caljouw	22	21
	14	B. Sai Praneeth	21	7	18
		M Caljouw	17	21	21
									M Caljouw	14	22	21
									K Koljonen	21	20	11
		L Muñoz	8	8
		K Koljonen	21	21

	First Round							Second Round							Third Round							Quarter-finals
		Nguyễn T M	16	23	10
		H-K Vittinghus	21	21	21
									H-K Vittinghus	11	21	21
								9	K Tsuneyama	21	13	17
		S Sirant	17	21	18
	9	K Tsuneyama	21	17	21
																H-K Vittinghus	15	21	10
															6	Lee Z J	21	15	21
		M Moreels	18	9
		Y Coelho	21	21
									Y Coelho	14	24	14
								6	Lee Z J	21	22	21
		J Ho-Shue	10	21	11
	6	Lee Z J	21	17	21
																						6	Lee Z J	21	8	1r
																						3	A Antonsen	12	21	11
		E Lale	15	16
		A R Dwicahyo	21	21
									A R Dwicahyo	13	15
								13	Lee C Y	21	21
		H Shu	8	14
	13	Lee C Y	21	21
															13	Lee C Y	9	11
															3	A Antonsen	21	21
		T Sugiarto
		N Karunaratne	w	/	o
									N Karunaratne	11	15
								3	A Antonsen	21	21
		V Malkov	16	13
	3	A Antonsen	21	21

	First Round							Second Round							Third Round							Quarter-finals
		L Montoya	15	13
		L E Peñalver	21	21
									L E Peñalver	20	12
								11	R Gemke	22	21
		B Leverdez	13	7
	11	R Gemke	21	21
															11	R Gemke	21	8	20
																Prannoy K	16	21	22
		Liew D	21	21
		M Zilberman	14	14
									Liew D	7	17
									Prannoy K	21	21
		Prannoy K	13	21	21
	8	Ng K L	21	18	19
																							Prannoy K	14	12
																							Loh K Y	21	21
		Heo K-h
		K Schäfer	w	/	o
									K Schäfer	14	14
								16	K Wangcharoen	21	21
		F Burestedt	17	21	9
	16	K Wangcharoen	21	15	21
															16	K Wangcharoen	4	7
																Loh K Y	21	21
		L Wraber	w	/	o
		S H Rhustavito
									L Wraber	4	8
									Loh K Y	21	21
		Loh K Y	14	21	21
	2	V Axelsen	21	9	6