Lone Tree Cemetery is a 42-acre (17 ha), active, nonprofit cemetery, mausoleum and columbarium complex in unincorporated Fairview, California, adjacent to the city of Hayward.

The site was first established in 1868.

[2] The cemetery has hosted, since 1903, the oldest continuous Memorial Day celebration in southern Alameda County.

[3] It contains a memorial to 73 soldiers from Hayward, Castro Valley and San Lorenzo who died in the Vietnam War,[4] and a memorial to Alameda County Sheriff's Deputies and police officers from cities in the county.

[5]