The 2014 Bundy standoff was an armed confrontation between supporters of cattle rancher Cliven Bundy and law enforcement following a 21-year legal dispute in which the United States Bureau of Land Management (BLM) obtained court orders directing Bundy to pay over $1 million in withheld grazing fees for Bundy's use of federally owned land adjacent to Bundy's ranch in southeastern Nevada.

On March 27, 2014, 145,604 acres (589 km²) of federal land in Clark County were temporarily closed for the "capture, impound, and removal of trespass cattle." BLM officials and law enforcement rangers began a roundup of such livestock on April 5, and Cliven Bundy's son, Dave, was arrested. On April 12, 2014, a group of protesters, some of them armed, approached the BLM "cattle gather." Sheriff Doug Gillespie negotiated with Bundy and newly confirmed BLM director, Neil Kornze, who elected to release the cattle and de-escalate the situation. The standoff drew support from some conservative and libertarian groups opposed to federal land policies, while the BLM faced criticism for its handling of the dispute, including the use of armed agents. As of the end of 2015, Cliven Bundy continued to graze his cattle on federal land and still had not paid the grazing fees.

The ongoing dispute started in 1993, when, in protest against changes in grazing rules, Bundy declined to renew his permit for cattle grazing on BLM-administered public lands near Bunkerville, Nevada. According to Bundy, the federal government lacks the constitutional authority to own vast tracts of lands, an argument repeatedly rejected by federal courts. According to the BLM, Bundy continued to graze his cattle on public lands without a permit. In 1998, Bundy was prohibited by the United States District Court for the District of Nevada from grazing his cattle on an area of land later called the Bunkerville Allotment. In July 2013, federal judge Lloyd D. George ordered Bundy to refrain from trespassing on federally administered land in the Gold Butte area of Clark County, Nevada.

Cliven and his son Ammon Bundy, and their supporters, have claimed that the federal government lacks the authority to manage public lands. These arguments have been repeatedly rejected by legal scholars and federal courts, including the U.S. Supreme Court; the property clause of the United States Constitution grants plenary authority to Congress to manage federal property, including land.

In 1848, as part of the Treaty of Guadalupe Hidalgo, the United States purchased from Mexico land that is now the southwestern region of the United States. Since then, the government has continuously owned land in what is now Nevada, including the Bunkerville Allotment. The Nevada Territory was partitioned in 1861 from the Utah Territory, and became a state in 1864. The original settlers in the 1840s and 1850s were Mormons from Utah and southern small-time farmers and ranchers from Louisiana, Arkansas, and Mississippi. After the end of the American Civil War, much of the land was settled by rural farmers, squatters and small-time cattle ranchers from Oklahoma, Texas, Arkansas, Louisiana, Missouri and Kansas, escaping from the post–Civil War Reconstruction and the associated violence and displacement.^{[citation needed]} Since 1934 federal rangelands in Nevada have been managed principally by either the Bureau of Land Management or its predecessor, the United States Grazing Service, or the United States Forest Service. As of 2010^[update], 47.8 million acres (more than two-thirds of Nevada's 70.3 million acres) were managed by the BLM. Throughout the nation, the BLM manages nearly 18,000 grazing permits and leases, of which about 700 are in Nevada. The season of use and the details of forage are stipulated in permits and leases; thus federal control can be exerted on the land used for grazing.

Under BLM permits first issued in 1954, Bundy grazed his cattle legally and paid his grazing fees on the Bunkerville Allotment until 1993. In 1989, the federal government declared the desert tortoise an endangered species and began negotiating a habitat conservation plan in Clark County, Nevada, to meet the needs of both the tortoise and the people, such as Bundy, who were using the land. In mid-1991, the United States Fish and Wildlife Service approved a short-term conservation plan that allowed for development of about 22,000 acres of tortoise habitat in and around Las Vegas in exchange for strict conservation measures on 400,000 acres of federal BLM land south of the city. This included the elimination of livestock grazing and strict limits on off-road vehicle use in the protected tortoise habitat. In 1993, a permanent conservation plan was put into place that more than doubled the conservation area, and included the Bunkerville Allotment.

Unlike many ranchers, Bundy refused to sell his grazing privileges back to the federal government. Instead, as a protest, Bundy did not pay his renewal fees in 1993. His permit was canceled in 1994. Although the agency made several attempts to have Bundy renew the permit, he declared that he no longer recognized the BLM's authority to regulate grazing, and asserted that he had "vested rights" to graze cattle on the land. Federal courts have consistently ruled against Bundy on grazing rights, ruling him a trespasser with no right to graze on federal land. The courts authorized the BLM to remove Bundy's cattle and to levy damages for his unauthorized use.

Bundy accumulated more than $1 million in unpaid grazing fees and court-ordered fines. The Portland Oregonian newspaper reported in May 2014 that the amount that Bundy owed stood in "stark contrast" to the situation in Oregon, where just 45 of the state's roughly 1,100 grazing permit holders collectively owed $18,759 (~$24,916 in 2024) in past-due payments to the BLM, and only two ranchers had unpaid fees more than 60 days past due. Excluding Bundy's unpaid fees, the total of all late grazing fees owed nationwide to the BLM was only $237,000.