梅肯縣 (田納西州)

{{Infobox U.S. county
| state = Tennessee
| county = Macon County
| county_zh = 梅肯縣
| seal =
| seal size =
| ex image =
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| founded = 1842
| named for =
| seat = Lafayette
| largest city =
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| area_total_km2 = 796 km² (307 mi²)
| area_total_sq_mi =
| area_land_km2 = 795 km² (307 mi²)
| area_land_sq_mi =
| area_water_km2 = 0 km² (0 mi²)
| area_water_sq_mi =
| area percentage = 0.02%
| census yr = 2000
| census estimate yr =
| pop = 20,386
| population_density_km2 = 26
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| web = www.maconcountytn.com
| coordinates = {{coord|{}|0|N|{}|0|W|type:adm2nd|display=title,inline}}
}}
梅肯縣（）是美國田納西州北部的一個縣，北鄰肯塔基州。面積796平方公里。根据美國2000年人口普查，共有人口20,386人。縣治拉法葉 (Lafayette)。

成立於1842年1月18日，以代表北卡羅萊納州的眾議員、參議員的納瑟內爾·梅肯 (Nathaniel Macon)命名。