萊姆斯通縣 (德克薩斯州)

{{Infobox U.S. county
| state = Texas
| county = Limestone County
| county_zh = 石灰岩縣
| seal =
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| ex image =
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| founded = 1841
| named for =
| seat = Groesbeck
| largest city =
| largest city wl =
| area_total_km2 = 2,417 km² (933 mi²)
| area_total_sq_mi =
| area_land_km2 = 2,354 km² (909 mi²)
| area_land_sq_mi =
| area_water_km2 = 63 km² (24 mi²)
| area_water_sq_mi =
| area percentage = 2.60%
| census yr = 2000
| census estimate yr =
| pop = 22,051
| population_density_km2 = 9
| population_density_sq_mi =
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| web = www.co.limestone.tx.us
| coordinates = {{coord|{}|0|N|{}|0|W|type:adm2nd|display=title,inline}}
}}
石灰岩縣（）是美國德克薩斯州中部和東部過渡地帶的一個縣。面積2,417平方公里。根據美國2000年人口普查，共有人口22,051人，其中白人占70.75%、非裔美国人占19.07%，拉美裔人佔12,97%。縣治格羅斯貝克（Groesbeck）。

成立於1846年4月11日。縣名來自當地的石灰岩。