Adolphus Peter Nelson (March 28, 1872 – August 21, 1927) was a U.S. Representative from Wisconsin.

Born in Holmes City Township, Minnesota, Nelson attended the public schools there.

He graduated from Hamline University in St. Paul, Minnesota, in 1897, and then moved to Grantsburg, Wisconsin, where he worked in banking.

Following his terms in Congress, he returned to work in banking in Grantsburg, where he died and was buried in Riverside Cemetery.

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