
The 1998 Winter Olympics, officially known as the XVIII Olympic Winter Games and commonly known as Nagano 1998, was a winter multi-sport event held from 7 to 22 February 1998, mainly in Nagano, Japan, with some events taking place in the nearby mountain communities of Hakuba, Karuizawa, Nozawa Onsen, and Yamanouchi. The city of Nagano had previously been a candidate to host the 1940 Winter Olympics, as well as the 1972 Winter Olympics, but had been eliminated at the national level by Sapporo on both occasions.

The 1998 Winter Paralympics , the seventh Winter Paralympics, were held alongside the Winter Olympics in Nagano, Japan from 5 to 14 March 1998. They were the first Paralympic Winter Games to be held outside Europe. 571 athletes competed in Nagano; it still remains the highest number of athletes competing at any Winter Paralympics.

The 2000 World Junior Hockey Championships, was the 24th edition of the Ice Hockey World Junior Championship. The tournament was hosted in Skellefteå and Umeå, Sweden from December 25, 1999, to January 4, 2000. The Czech Republic won the gold medal with a 1–0 shootout victory over Russia in the championship game, while Canada won the bronze medal with a 4–3 shootout victory over the United States. This still remains as the only tournament to where both medal games have been decided in a shootout.

The 2005 Special Olympics Winter World Games were hosted at Nagano in Nippon and were the first Special Olympics World Games held in Asia. Nagano became the first city in the world to host the Olympics, Paralympics and Special Olympics World Games.
The 2014 World Sprint Speed Skating Championships, officially the Essent ISU World Sprint Speed Skating Championships 2014, were held in Nagano, Japan, from 18 to 19 January 2014.

Aqua Wing Arena is an indoor aquatics arena in Nagano, Japan. The arena is located in the Yoshida area of the city of Nagano, in Nagano Sports Park , 5 km northeast of Nagano Station. The closest station is Asahi Station on the Nagano Electric Railway, a distance of 1 km.

The Big Hat is an indoor ice hockey arena in Nagano, Japan with a capacity of 10,104 seated spectators. Its official name is the Nagano Wakasato Tamokuteki Sports Arena. The arena was completed and officially opened on December 10, 1995.
Iizuna Kogen Ski Area is a skiing area located in Nagano, Nagano, Japan. It is operated by Nagano City.
Nagano Olympic Memorial Arena , or M-Wave , is a covered speed skating oval in the city of Nagano, Japan. M-Wave, which opened in November, 1996, was constructed for the speed skating events at the 1998 Winter Olympics. It was Japan's first International Skating Union (ISU) standard indoor 400m double-track, and only second indoor track speed skating in Japan. The other, Meiji Hokkaido-Tokachi Oval, is located in Obihiro, Hokkaido.

The Nagano Olympic Commemorative Marathon is an annual marathon road race which takes place in mid-April in Nagano, Japan. It is an IAAF Bronze Label Road Race competition. The Nagano Marathon has races for both elite and amateur runners. It is named in honour of the 1998 Winter Olympics which were held in Nagano.
Nagano Olympic Stadium is a baseball stadium in Nagano, Nagano, Japan. It was used for the opening and closing ceremonies for the 1998 Winter Olympics. The stadium holds 35,000 people.

AC Nagano Parceiro (AC長野パルセイロ) is a Japanese football club based in Nagano. They play in J3 League. The club name parceiro means "partner" in Portuguese.

AC Nagano Parceiro Ladies (AC長野パルセイロレディース) is a women's football club based in Nagano and affiliated with AC Nagano Parceiro. The team currently plays in the WE League, the highest division of women's football in Japan.

Nagano Sports Park is a park located in the Yoshida area of the city of Nagano, Nagano, Japan, approximately 5 km northeast of Nagano Station. The facilities are owned by Nagano Prefecture and by the Nagano municipal government.

The Spiral is a bobsleigh, luge, and skeleton track located in Iizuna village, located north of Nagano, Japan. Used for the bobsleigh and luge competitions for the 1998 Winter Olympics, it is the first permanent bobsleigh, luge, and skeleton track in Asia and the first of its type in the world with two or more uphill sections. It is officially referred to as the Nagano Bobsleigh-Luge Park in Japan.

For the 1998 Winter Olympics in Nagano, Japan, a total of fifteen sports venues were used. Nagano had attempted twice to host the Winter Olympics, losing out to Sapporo, host of the 1972 Winter Olympics. The third time, in 1991, Nagano edged out Salt Lake City to host the 1998 Games. The biathlon venue was adjusted in accordance with the Washington Convention over endangered species. The biggest venue controversy was at Happo'one resort on the length of the men's downhill and the battle that ensued to the point where skiing officials threatened to pull the event entirely before a compromise was reached three months before the Olympics. M-Wave has hosted three World Speed Skating Championships since the Olympics, while the Spiral has hosted a couple of world championships in bobsleigh, luge and skeleton.

The White Ring is an indoor sporting arena located in Nagano, Japan. The capacity of the arena is 7,000 people.
The 2000 World Single Distance Speed Skating Championships were held between 3 and 5 March 2000 in the M-Wave, Nagano, Japan.