Montana is a state in the western United States. The name probably comes from the Spanish word montaña ("mountain"). The state ranks fourth in size but has a low population and population density, with much of the state being rural. The economy is primarily ranching-based, with some agricultural crops (wheat, barley, sugar beets) and a significant lumber and mineral industry.

The western one-third of the state is primarily mountainous terrain, while the eastern two-third is part of the northern Great Plains. Originally inhabited by Native Americans, modern-day Montana became Montana Territory in 1864 and later became the 41st state in 1889. The state became the first to elect a female member of Congress, Jeannette Rankin. Montana's people are largely homogenous, with 89.5 percent of the population white (but with a sizable American Indian representation at 6.2 percent). The state is generally regarded as Republican; many are surprised to hear that the state has a Democratic governor (Brian Schweitzer), Democratic-controlled legislature (the Montana State Legislature), and one Democratic U.S. Senator (Max Baucus).

The state's state capital is Helena. The largest city is Billings. Its U.S. postal abbreviation is MT. The USS Montana was named in honor of the state.