摩根縣 (田納西州)

{{Infobox U.S. county
| state = Tennessee
| county = Morgan County
| county_zh = 摩根縣
| seal =
| seal size =
| ex image =
| ex image size =
| ex image cap =
| founded =
| named for =
| seat = Wartburg
| largest city = Oliver Springs
| largest city wl =
| area_total_km2 = 1,353
| area_total_sq_mi = 522
| area_land_km2 = 1,352
| area_land_sq_mi = 522
| area_water_km2 = 1
| area_water_sq_mi = .4
| area percentage = .07%
| census yr = 2000
| census estimate yr =
| pop = 19,757
| population_density_km2 = 15
| population_density_sq_mi = 38
| time zone = Eastern
| web =
| coordinates = {{coord|{}|0|N|{}|0|W|type:adm2nd|display=title,inline}}
}}
摩根县（）是美國田納西州東部的一個縣。面積1,353平方公里。根據美國2000年人口普查，共有人口17,957人。縣治瓦爾特堡 (Wartburg)。

成立於1817年。縣名紀念美國獨立戰爭軍官、代表維吉尼亞州的眾議員丹尼爾·摩根。