Men's singles at the 1985 IBF World Championships
Venue	Olympic Saddledome
Location	Calgary, Canada
Dates	June 10, 1985 (1985-06-10) – June 16, 1985 (1985-06-16)
Medalists
Han Jian    China   Morten Frost    Denmark   Jens Peter Nierhoff    Denmark   Yang Yang    China
← 1980 Copenhagen 1987 Beijing →

Events at the 1985 IBF World Championships
Singles	men	women
Doubles	men	women	mixed

The 1985 IBF World Championships (World Badminton Championships) were held in Calgary, Canada, from June 10 to June 16, 1985. Following the results of the men's singles. Men's top seed Zhao Jianhua of China withdrew from the tournament after suffering from pneumonia.

	First Round							Second Round							Third Round							Quarter Finals
		Ding Qiqing	15	17
		Chan Chi Choi	3	15					Ding	15	18
		Mike Butler	15	15					Butler	13	14
		Sakrapee Thongsari	6	5												Ding	15	15
		Dan Travers	15	15												Travers	7	2
		Chris Trapper	3	2					Travers	15	15
		Gustavo Salazar	2	6					González	7	2
		Roy Díaz González	15	15																			Ding	15	11	7
		Jens Peter Nierhoff	15	15																			Nierhoff	11	15	15
		Sung Han-kook	9	11					Nierhoff	15	15
		Rolf Rüsseler	10	5					Hall	9	4
		Darren Hall	15	15												Nierhoff	15	15
		Ulf Johansson	15	15												Misra	6	5
		Gan Rong-Yih	2	11					Johansson	4	9
		Hiroshi Nishiyami	11	9					Misra	15	15
		Sanat Misra	15	15

	First Round							Second Round							Third Round							Quarter Finals
		Han Jian	15	5	15
		Ong Beng Teong	3	15	10				Han	15	15
		Shuuji Matsuno	10	15	13				Modi	1	7
		Syed Modi	15	7	15											Han	15	15
		Pär-Gunnar Jönsson	15	15												Saputra	7	3
		Gregor Berden	2	4					Jönsson	9	11
		Claus Fischer	7	3					Saputra	15	15
		Hendry Saputra	15	15																			Han	15	15
		Nick Yates	15	15																			Carlsen	10	2
		Lee Deuk-choon	8	8					Yates	15	15
		Broddi Kristjansson	17	15					Kristjansson	7	2
		Samson Egbeyemi	14	1												Yates	15	7	12
		Peter Rawlek	12	10												Carlsen	13	15	15
		Torben Carlsen	15	15					Carlsen	15	15
		Chris Jogis	15	18					Jogis	12	11
		Uwe Scherpen	11	16

	First Round							Second Round							Third Round							Quarter Finals
		Heinz Fischer	15	18
		Rodney Barton	12	16					H. Fischer	0	5
		Icuk Sugiarto	15	15					Sugiarto	15	15
		Hiroyuki Hasegawa	3	5												Sugiarto	15	15	15
		Foo Kok Keong	11	15	12											Baddeley	18	8	11
		Vimal Kumar	15	7	8				Foo K. K.	6	15
		Chang Wen-Sung	5	3					Baddeley	15	15
		Steve Baddeley	15	15																			Sugiarto	8	6
		Ib Frederiksen	15	15																			Yang	15	15
		Ernesto de la Torre	0	3					Frederiksen	15	15
		Surachi Makkasasithorn	15	10	18				Makkasasithorn	6	4
		Fernando de la Torre	9	15	13											Frederiksen	18	10	11
		Jan-Eric Antonsson	15	6	15											Yang	17	15	15
		Graeme Robson	8	15	13				Antonsson	11	7
		Choi Byung-hak	3	9					Yang	15	15
		Yang Yang	15	15

	First Round							Second Round							Third Round							Quarter Finals
		Steve Butler	15	4	15
		Yang Qiangli	11	15	13				Butler	7	11
		Claude Tremblay	5	3					Kukasemkij	15	15
		Sompol Kukasemkij	15	15												Kukasemkij	12	12
		Benjamin Orakpo	9	10												Padukone	15	15
		Clement Ogbo	15	15					Ogbo	3	1
		Tariq Farooq	7	3					Padukone	15	15
		Prakash Padukone	15	15																			Padukone	4	6
		Alex White	15	15																			Frost	15	15
		Kevin Hussey	2	10					White	17	15
		Federico Valdez	1	6					Park	15	2
		Park Sung-bae	15	15												White	3	3
		Harald Klauer	13	16												Frost	15	15
		John Goss	15	17					Goss	3	3
		Shinji Matsuura	4	5					Frost	15	15
		Morten Frost	15	15

	Quarterfinals							Semifinals							Finals
	1	Ding Qiqing	15	11	7
	8	Jens Peter Nierhoff	11	15	15
									Jens Peter Nierhoff	9	14
									Han Jian	15	17
	4	Han Jian	15	15
	5	Torben Carlsen	10	2
																Han Jian	14	15	15
																Morten Frost	18	10	8
	3	Icuk Sugiarto	6	8
	6	Yang Yang	15	15
									Yang Yang	8	5
									Morten Frost	15	15
	2	Prakash Padukone	4	6
	7	Morten Frost	15	15

• "Weltmeisterschaften" (in German). Badminton-Sport. July 1985. pp. 4–8.