The 26th Biathlon World Championships were held in 1991 for the second time in Lahti, Finland.^[1]

Men's results

20 km individual

Date: February 24, 1991

Medal	Name	Nation	Penalties	Result
	Mark Kirchner	GER	2	1:03:05.7
	Alexandr Popov	URS	1	1:03:33.1
	Eirik Kvalfoss	NOR	2	1:03:38.3

10 km sprint

Date: February 19, 1991

Medal	Name	Nation	Penalties	Result
	Mark Kirchner	GER	0	30:48.1
	Frank Luck	GER	1	31:12.8
	Eirik Kvalfoss	NOR	2	31:27.9

Team event

Date: February 21, 1991

Medal	Name	Nation	Penalties	Result
	Italy Hubert Leitgeb Gottlieb Taschler Simon Demetz Wilfried Pallhuber	ITA	0	1:00:59.8
	Norway Sverre Istad Jon Åge Tyldum Ivar Michal Ulekleiv Frode Løberg	NOR	1	1:01:14.0
	Soviet Union Anatoliy Zdanovich Sergei Tarasov Sergei Tchepikov Valeriy Medvedtsev	URS	3	1:01:40.8

4 × 7.5 km relay

Date: February 23, 1991

Medal	Name	Nation	Penalties	Result
	Germany Ricco Groß Frank Luck Mark Kirchner Fritz Fischer	GER	0	1:33:33.5
	Soviet Union Juri Kashkarov Alexandr Popov Sergei Tarasov Sergei Tchepikov	URS	0	1:35:01.3
	Norway Geir Einang Eirik Kvalfoss Jon Åge Tyldum Gisle Fenne	NOR	0	1:35:08.3

Women's results

15 km individual

Date: February 24, 1991

Medal	Name	Nation	Penalties	Result
	Petra Schaaf	GER	0	55:14.9
	Grete I. Nykkelmo	NOR	4	57:13.4
	Iva Schkodreva	BUL	1	57:43.3

7.5 km sprint

Date: February 19, 1991

Medal	Name	Nation	Penalties	Result
	Grete I. Nykkelmo	NOR	2	30:01.9
	Svetlana Davidova	URS	3	30:32.7
	Elena Golovina	URS	1	30:35.1

Team event

Date: February 21, 1991

Medal	Name	Nation	Penalties	Result
	Soviet Union Yelena Belova Elena Golovina Svetlana Paramygina Svetlana Davidova	URS	20+11	59:08.1
	Bulgaria Maria Manolova Silvana Blagoeva Nadezda Aleksieva Iva Shkodreva	BUL	1+11	59:23.1
	Norway Synnøve Thoresen Signe Trosten Hildegunn Fossen Unni Kristiansen	NOR	11+2	59:53.2

3 × 7.5 km relay

Date: February 23, 1991

Medal	Name	Nation	Penalties	Result
	Soviet Union Yelena Belova Elena Golovina Svetlana Davidova	URS	0+2	1:24:54.3
	Norway Grete I. Nykkelmo Anne Elvebakk Elin Kristiansen	NOR	0+2	1:25:52.0
	Germany Uschi Disl Kerstin Möring Antje Misersky	GER	0+7	1:28:15.9

Medal table

Place	Nation				Total
1	Germany	4	1	1	6
2	Soviet Union	2	3	2	7
3	Norway	1	3	4	8
4	Italy	1	0	0	1
5	Bulgaria	0	1	1	2