Jacksonian Democracy is the political movement toward greater democracy for the common white man symbolized by American politician Andrew Jackson and his supporters. Jackson's policies followed the era of Jeffersonian democracy which dominated the previous political era. The Democratic-Republican Party of the Jeffersonians became factionalized in the 1820s. Jackson's supporters began to form the modern Democratic Party; they fought the rival Adams and Anti-Jacksonian factions, which soon emerged as the Whigs.

More broadly, the term refers to the era of the Second Party System (mid-1830s–1854) characterized by a democratic spirit. It can be contrasted with the characteristics of Jeffersonian democracy. Jackson's equal political policy became known as "Jacksonian Democracy", subsequent to ending what he termed a "monopoly" of government by elites. Jeffersonians opposed inherited elites but favored educated men while the Jacksonians gave little weight to education. The Whigs were the inheritors of Jeffersonian Democracy in terms of promoting schools and colleges. During the Jacksonian era, suffrage was extended to (nearly) all white male adult citizens.

In contrast to the Jeffersonian era, Jacksonian democracy promoted the strength of the presidency and executive branch at the expense of Congress, while also seeking to broaden the public's participation in government. They demanded elected (not appointed) judges and rewrote many state constitutions to reflect the new values. In national terms the Jacksonians favored geographical expansion, justifying it in terms of Manifest Destiny. There was usually a consensus among both Jacksonians and Whigs that battles over slavery should be avoided. The Jacksonian Era lasted roughly from Jackson's 1828 election until the slavery issue became dominant after 1850 and the American Civil War dramatically reshaped American politics as the Third Party System emerged.