Columbia is a town in Coös County, New Hampshire, United States.

Settlers failed to meet the terms of the original grant, so the plantation was transferred in 1770 to grantees including Sir James Cockburn, 8th Baronet, after which it was named "Cockburn Town", incorporated on December 16, 1797.

[4] In 1811, in the lead-up to the War of 1812, Governor John Langdon changed the name to Columbia.

Maple sugar became an important product, and lumber was cut and transported on rafts down the Connecticut River to markets.

By 1859, when the population was 762, Columbia had four sawmills, three gristmills, two clapboard machines, and a starch mill.

The highest point is the summit of Blue Mountain, at 3,720 feet (1,130 m) above sea level.