Farmers' Alliances, two powerful agricultural organizations in the United States in the late 1800's. The first began about 1874 in Lampasas County, Texas, as a secret society opposed to the local cattle barons and land swindlers. Later it spread over several other counties in the state, and in 1879 merged with the Knights of Labor to form the National Farmers' Alliance and Industrial Union.

The second, the National Farmers' Alliance (also called Farmers' Alliance), was organized in 1880 by Milton George, editor of Western Rural, a farm journal. Its aim was to fight against the unfair rates imposed by the railways against farm areas.

In the early 1890's both Alliances disintegrated after most of their members joined the People's, or Populist, party.