Marcus Arnold Kemp (September 25, 1878October 17, 1957) was a Canadian American immigrant, machinist, and Republican politician. He was a member of the Wisconsin Senate, representing Wisconsin's 11th Senate district during the 1923 and 1925 sessions.
Marcus Arnold Kemp was born on September 25, 1878, in Colborne, Ontario.
On February 3, 1923, Kemp was elected to the Senate in a special election to fill the vacancy caused by the death of Ole G. Kinney. Kemp was a member of the Republican Party of Wisconsin.
Kemp married Dessie Howenstine in 1921. The two remained married until his death on October 17, 1957, in Proctor, Minnesota. He was buried in the Oneota Cemetery, located in St. Louis County, Minnesota.