| Lewis A. Spengler | |
| State Assembly: | California |
| District: | 71st |
| Term Start: | January 4, 1915 |
| Term End: | January 8, 1917 |
| Predecessor: | Elijah A. Emmons |
| Successor: | Bert L. Farmer |
| Birth Name: | Lewis Arnold Spengler |
| Birth Date: | 21 September 1872 |
| Birth Place: | Spencertown, New York, U.S. |
| Death Place: | Garberville, California, U.S. |
| Education: | Common school |
| Occupation: | Real estate agent |
| Party: | Socialist |
Lewis Arnold Spengler (September 21, 1872 - December 6, 1959) was an American politician who served one term in the California State Assembly for the 71st district from 1915 to 1917.[1] [2] Spengler was one of three Socialists elected to the California State Assembly in 1914, the other two being George W. Downing and Witten William Harris.[3] While in the Assembly, he introduced legislation to establish free employment bureaus across the state.[4] He was defeated for re-election in 1916.