劉易斯縣 (西維吉尼亞州)

{{Infobox U.S. county
| state = West Virginia
| county = Lewis County
| county_zh = 劉易斯縣
| seal =
| seal size =
| ex image =
| ex image size =
| ex image cap =
| founded = 1816
| named for =
| seat = Weston
| largest city =
| largest city wl =
| area_total_km2 = 1,009 km² (390 mi²)
| area_total_sq_mi =
| area_land_km2 = 990 km² (382 mi²)
| area_land_sq_mi =
| area_water_km2 = 20 km² (8 mi²)
| area_water_sq_mi =
| area percentage = 1.95%
| census yr = 2000
| census estimate yr =
| pop = 16,919
| population_density_km2 = 17
| population_density_sq_mi =
| time zone =
| web =
| coordinates = {{coord|{}|0|N|{}|0|W|type:adm2nd|display=title,inline}}
}}
劉易斯縣（）是美國西維吉尼亞州中北部的一個縣。面積1,009平方公里。根據美國2000年人口普查，共有人口16,919人。縣治韋斯頓 (Weston)。

成立於1816年12月18日。縣名紀念美國獨立戰爭軍人查爾斯·劉易斯。