
Japan participated in the 2006 Asian Games held in Doha, Qatar from December 1, 2006 to December 15, 2006.

The 2006 FIBA World Championship was the 15th FIBA World Championship, the international basketball world championship for men's teams. The tournament was hosted by Japan and held from August 19 to September 3, 2006. It was co-organised by the International Basketball Federation (FIBA), Japan Basketball Association (JABBA) and the 2006 Organizing Committee.

The 2006 FIVB Volleyball Men's World Championship was held in Japan from 17 November to 3 December 2006. Like the previous edition, 24 teams participated in the tournament. Brazil won the Tournament, defeating Poland 3:0 in the final match. Bulgaria placed 3rd, defeating Serbia and Montenegro 3:1 in the 3rd place match. The Polish team dedicated this achievement to the deceased Polish volleyball player Arkadiusz Gołaś. The team honored him at the award ceremony, when they wore T-shirts with the number 16 and the words "Golas".

The 2006 IAAF World Cross Country Championships took place on April 1/2, 2006. The races were held at the Umi-no-nakamichi Seaside Park in Fukuoka, Japan, Japan's National Cross Country Course which is the permanent residence of the annual Fukuoka International Cross Country meeting.

The 2006 Thomas & Uber Cup was held from 28 April to 7 May in Sendai and Tokyo, Japan. It was the 24th tournament of Thomas Cup and 21st tournament of Uber Cup, men's and women's badminton tournaments.

Japan competed at the 2006 Winter Olympics in Turin, Italy. Shizuka Arakawa won the country's only medal, a gold, in women's figure skating. She was the first person born and raised in Asia to become an Olympic champion in that event. Athletes representing Japan participated in all but one of the 2006 Olympics' 15 sports, with Ice hockey the only exception.

Japan participated in the ninth Winter Paralympics in Turin, Italy.
The 2006 World Baseball Classic (WBC) was the inaugural tournament between national baseball teams that included players from Major League Baseball. It was held from March 3 to 20 in stadiums that are in and around Tokyo, Japan; San Juan, Puerto Rico; Lake Buena Vista, Florida; Phoenix, Arizona; Scottsdale, Arizona; Anaheim, California; and San Diego, California.