Solomon Lewis Spink (March 20, 1831 - September 22, 1881) was a Delegate from Dakota Territory to the United States House of Representatives. He was born in Whitehall, Washington County, New York, and was admitted to the bar in 1856, beginning pratcite in Burlington, Iowa. He moved to Paris, Illinois in 1860 and became the editor and publisher of the Prairie Beacon newspaper.

Spink was a member of the Illinois state House of Representatives in 1864, but moved to Yankton, Dakota in 1865, having been appointed as secretary of the territory, in which position he served until 1869. He was elected as a Republican to the House, and served from March 4, 1869 - March 3, 1871. He was an unsuccessful candidate for reelection in 1870, and returned to Yankton to practice law. He was again unsuccessful in 1876. He died in Yankton, and is intered in the City Cemetery there.