John Hyde Sweet (usually referred to as J. Hyde Sweet) (September 1, 1880 – April 4, 1964) was an American newspaper publisher Republican Party politician.

He was most notable for his brief service as a member of the United States House of Representatives from Nebraska.

Sweet was born in Milford, New York on September 1, 1880, and moved to Palmyra, Nebraska in 1885.

After that he served as manager and then editor of the Nebraska City News newspaper and was a Nebraskan delegate to the 1912 Progressive National Convention.

In 1940 was elected as a Republican to the Seventy-sixth United States Congress to fill the vacancy left by the previous representative George H. Heinke, who had died in a car crash in the January of that year.