Feature Name | Class | Elev. meters | County | Latitude DMS | Longitude DMS |
| Snake Island | Island | 44 | Webster | 32 26 51 N | 093 22 02 W |
| Snake Lake | Lake | 0 | Cameron | 29 52 54 N | 092 39 20 W |
| Snake Ridge | Ridge | 20 | Richland | 32 17 06 N | 091 54 11 W |
| Sneed Creek | Stream | | Rapides | 31 27 34 N | 092 43 37 W |
| Sneed Creek | Stream | | Sabine | 31 41 01 N | 093 32 49 W |
| Snell Branch | Stream | | Washington | 30 58 38 N | 090 17 31 W |
| Snikey Branch | Stream | | Beauregard | 30 36 48 N | 093 12 14 W |
| Snodgrass Lake | Lake | 18 | Tensas | 31 57 21 N | 091 25 43 W |
| Snow Creek | Stream | | Tangipahoa | 30 41 37 N | 090 15 06 W |
| Snow Goose Bayou | Gut | 0 | Plaquemines | 29 17 16 N | 089 10 31 W |
| Snowden Cemetery | Cemetery | 22 | Avoyelles | 30 52 27 N | 092 01 40 W |
| Snowden School | School | 86 | Lincoln | 32 32 50 N | 092 33 30 W |
| Snyder Brake | Swamp | 19 | Franklin | 32 06 58 N | 091 35 56 W |
| Snyder Cemetery | Cemetery | 26 | Madison | 32 14 47 N | 091 09 32 W |
| Snyder Memorial Museum | Building | 45 | Morehouse | 32 46 44 N | 091 53 40 W |
| Soap and Tallow Branch | Stream | | St. Tammany | 30 28 31 N | 090 08 20 W |
| Soap Creek | Stream | | Rapides | 31 00 19 N | 092 29 28 W |
| Soapstone Creek | Stream | | Allen | 30 51 17 N | 092 56 17 W |
| Socia Branch | Stream | | Grant | 31 34 17 N | 092 27 18 W |
| Social Springs Cemetery | Cemetery | 82 | Red River | 32 12 24 N | 093 16 34 W |
| Social Springs Church | Church | 72 | Red River | 32 12 20 N | 093 16 43 W |
| Soco | Populated Place | 95 | Claiborne | 33 00 11 N | 093 08 51 W |
| Socola | Populated Place | 1 | Plaquemines | 29 32 01 N | 089 45 34 W |
| Socola Canal | Canal | 1 | Plaquemines | 29 31 21 N | 089 45 40 W |
| Socola Canal Number Two | Canal | 0 | Plaquemines | 29 29 31 N | 089 44 47 W |
| Soda Lake Bed | Flat | 51 | Caddo | 32 39 36 N | 093 53 42 W |
| Soda Lake State Wildlife Management Area | Park | 50 | Caddo | 32 39 35 N | 093 53 35 W |
| Soileau | Populated Place | 21 | Allen | 30 35 21 N | 092 39 18 W |
| Soileau | Populated Place | 17 | St. Landry | 30 39 05 N | 092 07 00 W |
| Soileau Church | Church | 21 | Allen | 30 35 01 N | 092 38 46 W |
| Soileaus Cemetery | Cemetery | 22 | Evangeline | 30 40 43 N | 092 12 08 W |
| Solar Pass | Channel | 1 | St. Martin | 29 44 11 N | 091 10 51 W |
| Solid Rock Baptist Church | Church | 7 | Iberia | 30 01 05 N | 091 49 35 W |
| Solid Rock Baptist Church | Church | 2 | Jefferson | 29 58 25 N | 090 14 57 W |
| Solid Rock Baptist Church | Church | 35 | Rapides | 31 19 17 N | 092 26 00 W |
| Solitude | Populated Place | 38 | West Feliciana | 30 49 57 N | 091 25 30 W |
| Solitude Point | Cape | 11 | West Baton Rouge | 30 32 52 N | 091 15 52 W |
| Solley Hill | Populated Place | 71 | Caddo | 32 52 02 N | 094 02 11 W |
| Soloman Temple | Church | 8 | Iberville | 30 15 28 N | 091 07 13 W |
| Solomon Church | Church | 24 | Tensas | 32 04 01 N | 091 13 19 W |
| Solomon Temple | Church | 24 | Madison | 32 15 54 N | 091 06 20 W |
| Solomon Temple Baptist Church | Church | 22 | Ouachita | 32 28 32 N | 092 05 54 W |
| Solomons Temple Church (historical) | Church | 27 | Madison | 32 22 17 N | 091 04 20 W |
| Somers (historical) | Populated Place | 12 | St. Landry | 30 48 08 N | 091 48 29 W |
| Somerset | Populated Place | 25 | Tensas | 32 10 35 N | 091 14 02 W |
| Somerset Cemetery | Cemetery | 26 | Tensas | 32 09 09 N | 091 10 51 W |
| Somerset Landing | Locale | 28 | Tensas | 32 09 24 N | 091 10 34 W |
| Somerset Plantation | Locale | 28 | Tensas | 32 08 57 N | 091 11 38 W |
| Son Pond | Bay | -3 | Plaquemines | 29 14 40 N | 089 09 49 W |
| Sondheimer | Populated Place | 26 | East Carroll | 32 33 00 N | 091 10 33 W |
| Sondheimer Post Office (historical) | Post Office | 26 | East Carroll | 32 32 55 N | 091 10 32 W |
| Sones Lake | Lake | 26 | Washington | 30 56 14 N | 089 45 50 W |
| Song of Praise Church | Church | 8 | Jefferson Davis | 30 13 43 N | 092 39 26 W |
| Songy (historical) | Populated Place | 2 | St. John the Baptist | 30 00 56 N | 090 38 57 W |
| Soniat | Populated Place | 7 | Iberville | 30 10 14 N | 091 09 40 W |
| Soniat Canal | Canal | -4 | Jefferson | 29 58 53 N | 090 12 48 W |
| Soniat Playground | Park | 1 | Jefferson | 29 57 11 N | 090 12 08 W |
| Sonnett Creek | Stream | | Winn | 31 56 19 N | 092 39 36 W |
| Sonnett Creek | Stream | | Winn | 31 55 47 N | 092 42 58 W |
| Sonnier Bayou | Stream | | Allen | 30 33 16 N | 092 43 33 W |
| Sonnier Cemetery | Cemetery | 18 | Allen | 30 34 32 N | 092 40 34 W |
| Sonnier Landing Field | Airport | 3 | Vermilion | 29 59 40 N | 092 23 08 W |
| Sophie B Wright Junior High School | School | 1 | Orleans | 29 55 31 N | 090 06 09 W |
| Sophie Newcomb College (historical) | School | 2 | Orleans | 29 55 38 N | 090 05 00 W |
| Sorapura Market | Locale | 3 | Orleans | 29 55 23 N | 090 04 27 W |
| Sorbet Canal | Canal | 2 | Vermilion | 29 54 07 N | 092 09 28 W |
| Sorman Cemetery | Cemetery | 75 | St. Helena | 30 48 19 N | 090 44 22 W |
| Sorrel | Populated Place | 5 | St. Mary | 29 53 21 N | 091 37 00 W |
| Sorrel Bay | Stream | | St. Martin | 30 07 54 N | 091 27 39 W |
| Sorrento | Populated Place | 2 | Ascension | 30 11 04 N | 090 51 33 W |
| Sorrento Gas and Oil Field | Oilfield | 0 | Ascension | 30 10 44 N | 090 47 27 W |
| Soto Saline Slough | Gut | 52 | Sabine | 31 44 54 N | 093 48 40 W |
| Soule College (historical) | School | 2 | Orleans | 29 55 55 N | 090 04 46 W |
| Soulouque | Populated Place | 8 | Iberville | 30 16 20 N | 091 09 19 W |
| South 40 Heliport | Airport | 2 | Calcasieu | 30 07 25 N | 093 15 07 W |
| South Acres Baptist Church | Church | 77 | Caddo | 32 25 30 N | 093 49 18 W |
| South Airline Baptist Church | Church | 6 | East Baton Rouge | 30 21 37 N | 091 00 33 W |
| South Alexandria Schools | School | 23 | Rapides | 31 17 47 N | 092 26 59 W |
| South Alexandria Sixth Grade Center | School | 23 | Rapides | 31 17 43 N | 092 26 53 W |
| South Bancroft Gas Field | Oilfield | 28 | Beauregard | 30 29 31 N | 093 40 01 W |
| South Bank Revetment | Levee | 11 | Concordia | 31 03 47 N | 091 37 00 W |
| South Barataria Oil and Gas Field | Oilfield | 0 | Jefferson | 29 41 36 N | 090 09 35 W |
| South Baskinton Oil Field | Oilfield | 23 | Franklin | 32 18 42 N | 091 40 25 W |
| South Baton Rouge (subdivision) | Populated Place | 16 | East Baton Rouge | 30 25 49 N | 091 10 37 W |
| South Baton Rouge Church of Christ | Church | 11 | East Baton Rouge | 30 25 09 N | 091 05 34 W |
| South Bayou | Gut | -2 | St. Bernard | 30 02 28 N | 089 23 59 W |
| South Bayou Boeuf Oil and Gas Field | Oilfield | 0 | Lafourche | 29 50 01 N | 090 36 14 W |
| South Bayou De Fleur Oil and Gas Field | Oilfield | 0 | Jefferson | 29 39 48 N | 090 02 55 W |
| South Bayou Mallet Oil and Gas Field | Oilfield | 14 | Acadia | 30 24 43 N | 092 22 26 W |
| South Bear Head Creek Oil Field | Oilfield | 24 | Beauregard | 30 31 09 N | 093 31 41 W |
| South Beauregard Elementary School | School | 34 | Beauregard | 30 34 11 N | 093 14 03 W |
| South Beauregard High School | School | 35 | Beauregard | 30 34 08 N | 093 14 04 W |
| South Bell City Gas Field | Oilfield | 1 | Calcasieu | 30 05 42 N | 092 58 50 W |
| South Bend | Populated Place | 1 | St. Mary | 29 37 49 N | 091 32 08 W |
| South Bend Cemetery | Cemetery | 1 | St. Mary | 29 37 26 N | 091 32 20 W |
| South Big Creek Oil Field | Oilfield | 23 | Franklin | 32 21 48 N | 091 40 40 W |
| South Bilt | Populated Place | 16 | Tangipahoa | 30 30 21 N | 090 29 54 W |
| South Black Bayou Oil Field | Oilfield | 1 | Cameron | 29 58 39 N | 093 34 13 W |
| South Bosco Oil and Gas Field | Oilfield | 11 | Acadia | 30 16 14 N | 092 10 05 W |
| South Bossier Church of the Nazarene | Church | 50 | Bossier | 32 30 20 N | 093 42 26 W |
| South Boulevard Baptist Church | Church | 10 | East Baton Rouge | 30 26 22 N | 091 10 59 W |
| South Boulevard Extended Day School | School | 11 | East Baton Rouge | 30 26 26 N | 091 10 52 W |
| South Bourg Gas Field | Oilfield | 1 | Terrebonne | 29 32 11 N | 090 37 45 W |
| South Branch Catca Creek | Stream | | Washington | 30 44 39 N | 090 13 46 W |
| South Branch Grand Bayou | Gut | 1 | St. Bernard | 29 56 53 N | 089 33 07 W |
| South Broadmoor (subdivision) | Populated Place | 14 | East Baton Rouge | 30 26 26 N | 091 04 40 W |
| South Canal | Canal | 24 | East Baton Rouge | 30 37 02 N | 091 08 56 W |
| South Carson Creek | Stream | | Washington | 30 50 16 N | 090 17 45 W |
| South Catahoula Lake Oil Field | Oilfield | 14 | La Salle | 31 26 26 N | 092 07 13 W |
| South Catahoula Oil Field | Oilfield | 12 | Rapides | 31 26 40 N | 092 09 53 W |