| James R. Lyon | |
| State: | Wisconsin |
| State Assembly: | Wisconsin |
| District: | Monroe 2nd |
| Term Start: | January 1, 1889 |
| Term End: | January 1, 1891 |
| Predecessor: | Miles L. Hineman |
| Successor: | James Tormey |
| Birth Date: | 4 November 1833 |
| Birth Place: | Benton Center, New York |
| Death Date: | c. 1914 |
| Death Place: | Kendall, Monroe County, Wisconsin |
| Nationality: | American |
| Occupation: | Merchant, Politician |
| Party: | Republican |
| Allegiance: |  United States |
| Branch: | Union Army |
| Serviceyears: | 1861–1865 |
| Rank: | Private |
| Unit: | 6th Reg. Wis. Vol. Infantry |
| Battles: | American Civil War |
James R. Lyon (November 4, 1833c. 1914) was an American merchant, Republican politician, and Union Army volunteer in the American Civil War.[1]
Lyon was born on November 4, 1833, in Benton, New York. He later resided in Glendale, Monroe County, Wisconsin, and Sparta, Wisconsin. During the American Civil War, he served in Company I of the 6th Wisconsin Volunteer Infantry Regiment in the Union Army. Lyon was a merchant by trade.[1]
Lyon was elected to the Assembly in 1888 and was defeated seeking re-election in 1890. He was a Republican.
| colspan="6" style="text-align:center;background-color: #e9e9e9;"| General Election, November 6, 1888| colspan="6" style="text-align:center;background-color: #e9e9e9;"| General Election, November 4, 1890