林縣 (密蘇里州)

{{Infobox U.S. county
| state = Missouri
| county = Linn County
| county_zh = 林縣
| seal =
| seal size =
| ex image =
| ex image size =
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| founded =
| named for = Lewis F. Linn, U.S. senator from Missouri
| seat =
| largest city =
| largest city wl = Brookfield
| area_total_km2 = 1,610
| area_total_sq_mi = 621
| area_land_km2 = 1,607
| area_land_sq_mi = 620
| area_water_km2 = 3
| area_water_sq_mi = 1
| area percentage = 0.18%
| census yr = 2000
| census estimate yr =
| pop = 13,754
| population_density_km2 = 9
| population_density_sq_mi = 22
| time zone = Central
| web =
| coordinates = {{coord|{}|0|N|{}|0|W|type:adm2nd|display=title,inline}}
}}

林縣（）是美國密蘇里州中北部的一個縣。面積1,610平方公里。根據美國2000年人口普查，共有人口13,754。縣治林奈 (Linneus)。

成立於1837年。縣名紀念代表密蘇里州的聯邦參議員劉易斯·菲爾茨·林 (Lewis Fields Linn)。