蘭開斯特縣 (維吉尼亞州)

{{Infobox U.S. county
| state = Virginia
| county = Lancaster County
| county_zh = 蘭開斯特縣
| seal =
| seal size =
| ex image =
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| founded = 1651
| named for =
| seat = Lancaster
| largest city =
| largest city wl =
| area_total_km2 =
| area_total_sq_mi = 231
| area_land_km2 =
| area_land_sq_mi =
| area_water_km2 =
| area_water_sq_mi = 98
| area percentage = 42.45%
| census yr = 2000
| census estimate yr =
| pop = 11567
| population_density_km2 = 34
| population_density_sq_mi =
| time zone =
| web = www.lancova.com
| coordinates = {{coord|{}|0|N|{}|0|W|type:adm2nd|display=title,inline}}
}}
蘭開斯特縣（）是美國維吉尼亞州東部的一個縣，瀕臨大西洋。成立於1651年。面積599平方公里。根據美國2000年人口普查，共有人口11,567。縣治蘭開斯特。