is a Japanese politician of the Democratic Party for the People, a member of the House of Representatives in the Diet (national legislature). A native of Kitamoto, Saitama and graduate of Waseda University, he was elected for the first time in 2000.
| Atsushi Oshima | |
| Native Name Lang: | ja |
| Office: | Election Campaign Committee chief of the DPFP |
| Term Start: | 7 May 2018 |
| Term End: | 21 September 2020 |
| Leader: | Yuichiro Tamaki |
| Predecessor: | office established |
| Successor: | office abolished |
| Office1: | Acting Leader of the Kibō no Tō |
| Leader1: | Yuichiro Tamaki |
| Term Start1: | 14 November 2017 |
| Term End1: | 7 May 2018 |
| Predecessor1: | office established |
| Successor1: | office abolished |
| Term Start2: | September 2017 |
| Term End2: | October 2017 |
| Predecessor2: | Yoshihiko Noda |
| Successor2: | Teruhiko Mashiko |
| Office3: | Member of the House of Representatives |
| Term Start3: | 25 June 2000 |
| Constituency3: | Northern Kanto PR block Saitama 6th |
| Birth Date: | 21 December 1956 |
| Birth Place: | Kitamoto, Saitama Prefecture, Japan |
| Party: | Constitutional Democratic |
| Otherparty: | Democratic Democratic Kibō DPFP |
| Website: | https://oshimaatsushi.com/ |