The National Cemetery, today called the Alameda-Stone Cemetery, is a defunct cemetery located in downtown Tucson. It consisted of a walled military cemetery, with a larger civilian cemetery that surrounded the north and east portions of the military cemetery. The military cemetery was in use from 1862 through 1881. Most of the military burials were exhumed in 1884 and were taken to the Fort Lowell Cemetery, located several miles to the east. Many of these were subsequently exhumed in 1891 and taken to the San Francisco Presidio.

The civilian portion was in use from probably the late 1850s to early 1860s until June 1875. The civilian burials were largely left in place and the area was developed for residential housing in the late 1880s. Burials were frequently disturbed during excavation of latrines, well, basements, and foundations. The total number of burials in the civilian portion of the cemetery is not known. Tucson Catholic Diocese burial records list over 900 interments. The 1870 US census mortality schedule and newspaper accounts provide additional names.

In 2007-2008, Pima County had most of the cemetery excavated as part of the Joint Courts Archaeological Project. A portion of the military cemetery was excavated and the remains were later reburied in the Southern Arizona Veterans Memorial Cemetery in Sierra Vista, Cochise County, Arizona. The remains and associated funerary artifacts from 1,386 individuals from the civilian portion of the cemetery were reburied in the All Faiths Cemeteries in Tucson.

The remains of 36 Native Americans were reburied on the Tohono O'Odham Nation.

A small portion of the cemetery remains unexcavated with an unknown number of individuals still buried in both the military and civilian portions of the cemetery.