| Toshio Shimada | |
| Native Name Lang: | ja |
| Office: | Speaker of the House of Representatives |
| Term Start: | 8 June 1945 |
| Term End: | 18 December 1945 |
| Predecessor: | Tadahiko Okada |
| Successor: | Senzō Higai |
| Office1: | Minister of Agriculture and Commerce |
| Primeminister1: | Kuniaki Koiso |
| Term Start1: | 22 July 1944 |
| Term End1: | 7 April 1945 |
| Predecessor1: | Nobuya Uchida |
| Successor1: | Tadaatsu Ishiguro |
| Office2: | Minister of Agriculture and Forestry |
| Primeminister2: | Mitsumasa Yonai |
| Term Start2: | 16 January 1940 |
| Term End2: | 22 Jul 1940 |
| Predecessor2: | Tadamasa Sakai |
| Successor2: | Fumimaro Konoe |
| Primeminister3: | Kōki Hirota |
| Term Start3: | 9 March 1936 |
| Term End3: | 2 February 1937 |
| Predecessor3: | Tatsunosuke Yamazaki |
| Successor3: | Tatsunosuke Yamazaki |
| Office4: | Director-General of the Legislation Bureau |
| Primeminister4: | Tsuyoshi Inukai |
| Term Start4: | 13 December 1931 |
| Term End4: | 26 May 1932 |
| Predecessor4: | Takao Saitō |
| Successor4: | Zenjirō Horikiri |
| Birth Date: | 19 June 1877 |
| Birth Place: | Gōtsu, Shimane, Japan |
| Death Place: | Minato, Tokyo, Japan |
| Nationality: | Japanese |
was a politician and cabinet minister in the pre-war Empire of Japan.
Shimada was born in the city of Gōtsu in Shimane Prefecture Japan. In 1900, he graduated from the law department of Tokyo Imperial University, and found employment as a journalist for magazines. He was elected to a seat in the Tokyo City assembly in 1903; however, in 1905 he accepted a position as a lecturer at a law school in Yunnan Province, China. He returned to Japan in 1907.In 1911, Shimada opened a legal office and began work as a lawyer. He was elected to the Lower House of the Diet of Japan in the 1912 General Election as an independent, but joined the Rikken Seiyūkai the following year. He was re-elected nine times, and rose within the Rikken Seiyūkai to eventually become Secretary-General of the party from 1937 to 1939.
In 1931, Prime Minister Tsuyoshi Inukai selected Shimada as Director-General of the Cabinet Legislation Bureau. He joined the cabinet under the administration of Prime Minister Kōki Hirota in 1936 as Minister of Agriculture and Forestry. He accepted the same portfolio again in January 1940 under the Yonai administration, and continued to hold that post into the 2nd Konoe administration. As with all other Japanese politicians, Tawara was forced to join the Taisei Yokusankai created by Konoe in 1940.
During World War II, Shimada accepted the cabinet position of Minister of Agriculture and Commerce under the Koiso administration. From June to September 1945, he served as Speaker of the Lower House.
Immediately following the surrender of Japan in 1945, he became one of the founding members of the Nihon Shimpo-tō political party. However, as with all members of the wartime administration, he was purged from public office by the American occupation authorities in 1946.
Shimada died on 21 December 1947.
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