List of Indian massacres in North America

An Indian massacre is any incident in which a significant number of indigenous peoples of the Americas, as a group, killed or were killed outside the confines of mutual combat in war.
"Indian massacre" is a phrase whose use and definition has evolved and expanded over time. European colonists initially used the phrase to describe attacks by indigenous Americans which resulted in mass colonial casualties. While similar attacks by colonists on Indian villages were called "raids" or "battles", successful Indian attacks on white settlements or military posts were routinely termed "massacres". Knowing very little about the native inhabitants of the American frontier, the colonists were deeply fearful, and often, European Americans who had rarely – or never – seen a Native American read Indian atrocity stories in popular literature and newspapers. Emphasis was placed on the depredations of "murderous savages" in their information about Indians, and as the migrants headed further west, they frequently feared the Indians they would encounter.
The phrase eventually became commonly used to also describe mass killings of American Indians. Killings described as "massacres" often had an element of indiscriminate targeting, barbarism, or genocidal intent.
According to historian Jeffrey Ostler, "Any discussion of genocide must, of course, eventually consider the so-called Indian Wars, the term commonly used for U.S. Army campaigns to subjugate Indian nations of the American West beginning in the 1860s. In an older historiography, key events in this history were narrated as battles. It is now more common for scholars to refer to these events as massacres. This is especially so of a Colorado territorial militia's slaughter of Cheyennes at Sand Creek (1864) and the army's slaughter of Shoshones at Bear River (1863), Blackfeet on the Marias River (1870), and Lakotas at Wounded Knee (1890). Some scholars have begun referring to these events as “genocidal massacres,” defined as the annihilation of a portion of a larger group, sometimes to provide a lesson to the larger group."
It is difficult to determine the total number of people who died as a result of "Indian massacres". In The Wild Frontier: Atrocities during the American-Indian War from Jamestown Colony to Wounded Knee, lawyer William M. Osborn compiled a list of alleged and actual atrocities in what would eventually become the continental United States, from first contact in 1511 until 1890. His parameters for inclusion included the intentional and indiscriminate murder, torture, or mutilation of civilians, the wounded, and prisoners. His list included 7,193 people who died from atrocities perpetrated by those of European descent, and 9,156 people who died from atrocities perpetrated by Native Americans.
In An American Genocide, The United States and the California Catastrophe, 1846–1873, historian Benjamin Madley recorded the numbers of killings of California Indians between 1846 and 1873. He found evidence that during this period, at least 9,400 to 16,000 California Indians were killed by non-Indians. Most of these killings occurred in what he said were more than 370 massacres (defined by him as the "intentional killing of five or more disarmed combatants or largely unarmed noncombatants, including women, children, and prisoners, whether in the context of a battle or otherwise").
This is a listing of some of the events reported then or referred to now as "Indian massacre".