James Harvey "Cyclone" Davis (December 24, 1853 – January 31, 1940) was a People's Party (Populist) organizer and a Democratic U.S. Representative from Texas for one term from 1915–1917.

[1] Subsequently, he studied law, was admitted to the bar in 1882 and commenced practice in Mount Vernon, Texas.

Later, he engaged in the newspaper-publishing business, buying the Mount Vernon-Franklin Herald and was President of the Texas Press Association from 1886 to 1888.

He campaigned for John Ireland, who was elected Governor in 1884, and Davis became a lecturer for the state Farmers' Alliance that same year.

Davis became one of the foremost attractions on the alliance speakers' circuit through his verbal assaults upon such opponents as banks and corporations.

He was one of only five lawyers to participate in the founding convention of the People's party in Cincinnati in 1892, where he served on both the executive and platform committees.

According to an Associated Press reporter, Davis so demolished his opponent that only one sweep of the "Texas Cyclone" was sufficient cause for Hardin to cancel the remaining scheduled debates.

[1] Cyclone Davis was an unsuccessful Populist candidate for Attorney General of Texas in 1892 and he was influential in the formation of the People's Party, serving as organizer and committeeman from 1892 to 1900.