January 13 – Aid group worker Dr. Keiko Akahane returns to Japan following her release from three months in captivity in Somalia.
January 14 – Keiji Fujimaki, vice president of Nishimatsu Construction, and three others are arrested on suspicion of violating foreign exchange regulations for allegedly bringing in 70 million Yen in funds from abroad without reporting them to customs authorities.
March 3 – The chief secretary of Ichirō Ozawa, head of the DPJ is arrested on suspicion of accepting illegal corporate donations from Nishimatsu Construction.
March 4 – 2-trillion-yen stimulus plan, which allows one-time cash handout of 12,000 yen per person, and additional 8,000 yen for age 18 and under and 65 and older, is approved by a two-thirds majority of the House of Representatives, after rejection by the opposition-controlled House of Councillors.
May 15 – Fukuoka High Court sentences former Fukuoka city office worker who drank a "considerable amount of alcohol" before causing a traffic accident that killed three children in 2006, to twenty years in prison, dismissing a 71⁄2-year term ruled by Fukuoka Regional Court.
June 1 – A modification of the law on sales of medications takes effect. The law classifies products into three categories and allows over-the-counter sales of two at convenience-stores and supermarkets with a registered sales agent present, while requiring a pharmacist to oversee sales of the third category. Convenience stores begin sales of vitamins, analgesics and cold remedies.
June 1 – Amended Road Traffic Law, which requires 75 years or older people to take mandatory cognitive function tests upon renewal of their licenses, goes into effect.
June 16 – 10 climbers lost their lives in the Taisetsu mountain range in Hokkaido. Hokkaido Police raided the head office and a local branch of Amuse travel on suspicion of improper management of a guided tour on June 18.
July 22 – Total Solar eclipse is observed in Iwo Jima and over the water around there. It was not observed from Akusekijima, in which supposed to have longest-lasting solar eclipse, due to stormy conditions over the island around the time of the total solar eclipse.
August 10 – A massive heavy rain, following devastate flood and landslide in Sayo, Hyogo, which killed 18 people.
August 11 – A strong earthquake with a magnitude of 6.5 struck Shizuoka Prefecture, killing one and more than 100 injured, part of the Tomei Expressway is collapsed due to landslide occurred right below.
March 29 – Chiba gubernatorial election: Supported by parts of the Liberal Democratic Party, former actor Eiji Suzuki (stage name: Kensaku Morita) beats centre-left supported Taira Yoshida and three other contenders to succeed retiring two-term governor Akiko Dōmoto, a former Socialist Diet member.
July 12 – In the most populous prefecture of Tokyo, the LDP suffers a major defeat, losing its status as strongest party in the assembly for the first time since the 1960s. The loss increases the pressure on LDP president Tarō Asō to resign or call early elections for the national lower house.