Feature Name | Class | Elev. meters | County | Latitude DMS | Longitude DMS |
| Manuel Cemetery | Cemetery | 16 | St. Landry | 30 32 16 N | 092 18 03 W |
| Manuel School (historical) | School | 45 | Natchitoches | 31 29 18 N | 092 54 16 W |
| Manwell Gully | Stream | | Evangeline | 30 40 09 N | 092 31 36 W |
| Many | Populated Place | 84 | Sabine | 31 34 08 N | 093 29 03 W |
| Many Branch | Stream | | Sabine | 31 23 29 N | 093 26 29 W |
| Many City Hall | Building | 89 | Sabine | 31 34 08 N | 093 28 55 W |
| Many Elementary School | School | 93 | Sabine | 31 34 22 N | 093 28 01 W |
| Many High School | School | 78 | Sabine | 31 35 39 N | 093 27 02 W |
| Many Junior High School | School | 96 | Sabine | 31 34 18 N | 093 28 24 W |
| Many Post Office | Post Office | 88 | Sabine | 31 34 00 N | 093 28 43 W |
| Maple Bayou | Stream | | St. Mary | 29 38 43 N | 091 18 35 W |
| Maple Bayou | Stream | | St. Tammany | 30 16 52 N | 089 40 06 W |
| Maple Branch | Stream | | Vernon | 30 57 31 N | 093 03 25 W |
| Maple Fork | Stream | | Calcasieu | 30 12 45 N | 093 18 53 W |
| Maple Island | Island | 0 | Vermilion | 29 49 35 N | 092 06 01 W |
| Maple Marsh | Swamp | 1 | Cameron | 29 58 00 N | 092 42 32 W |
| Maple Slough | Gut | 7 | St. Tammany | 30 26 45 N | 089 46 48 W |
| Maple Springs Church | Church | 89 | De Soto | 32 00 27 N | 093 59 15 W |
| Maples Cemetery | Cemetery | 83 | Washington | 30 56 40 N | 090 15 41 W |
| Maplewood | Populated Place | 5 | Calcasieu | 30 13 53 N | 093 18 59 W |
| Maplewood Branch Library | Building | 5 | Calcasieu | 30 13 48 N | 093 19 11 W |
| Maplewood Church of Christ | Church | 1 | Calcasieu | 30 13 43 N | 093 19 24 W |
| Maplewood Elementary School | School | 4 | Calcasieu | 30 13 37 N | 093 19 13 W |
| Maplewood First Baptist Church | Church | 4 | Calcasieu | 30 13 38 N | 093 19 04 W |
| Maplewood Middle School | School | 5 | Calcasieu | 30 13 38 N | 093 19 08 W |
| Maplewood Plaza Shopping Center | Locale | 5 | Calcasieu | 30 13 37 N | 093 21 06 W |
| Maplewood United Methodist Church | Church | 5 | Calcasieu | 30 13 42 N | 093 19 16 W |
| Marais a Roche | Swamp | 12 | Avoyelles | 31 07 21 N | 091 47 05 W |
| Marais Long | Lake | 8 | St. Landry | 30 28 23 N | 092 00 14 W |
| Maranatha Baptist Church | Church | 2 | Jefferson | 29 57 53 N | 090 13 34 W |
| Maranatha Baptist Church | Church | 20 | Ouachita | 32 29 36 N | 092 05 20 W |
| Maranatha Christian Academy | School | 51 | Rapides | 31 21 09 N | 092 24 47 W |
| Marathon | Populated Place | 4 | St. John the Baptist | 30 03 34 N | 090 36 05 W |
| Marathon Venice Heliport | Airport | -1 | Plaquemines | 29 17 10 N | 089 21 50 W |
| Maravich Assembly Center | Building | 7 | East Baton Rouge | 30 24 52 N | 091 11 04 W |
| Marburyville (historical) | Populated Place | 31 | Tangipahoa | 30 38 21 N | 090 27 50 W |
| Marcarco | Populated Place | 24 | Morehouse | 32 43 02 N | 091 59 27 W |
| Marce | Populated Place | 2 | Iberia | 29 56 34 N | 091 53 03 W |
| Marce Cemetery | Cemetery | 43 | Natchitoches | 31 30 28 N | 092 46 60 W |
| Marceaux | Populated Place | 1 | Vermilion | 29 57 50 N | 092 24 41 W |
| Marceaux Cemetery | Cemetery | 2 | Vermilion | 29 58 32 N | 092 22 34 W |
| Marceaux Cemetery | Cemetery | 3 | Vermilion | 29 58 48 N | 092 17 14 W |
| Marceaux Cemetery | Cemetery | 3 | Vermilion | 29 59 35 N | 092 18 27 W |
| Marceaux Island | Island | 1 | Cameron | 29 54 07 N | 093 45 06 W |
| Marchand | Populated Place | 5 | Ascension | 30 08 58 N | 090 59 39 W |
| Marchand Revetment | Levee | 4 | Ascension | 30 08 46 N | 090 59 45 W |
| Marchand Vocational School | School | 4 | Ascension | 30 08 17 N | 090 57 18 W |
| Marco | Populated Place | 30 | Natchitoches | 31 30 34 N | 092 45 54 W |
| Marco Canal | Canal | 27 | Natchitoches | 31 32 43 N | 092 47 07 W |
| Marco School (historical) | School | 30 | Natchitoches | 31 31 26 N | 092 46 39 W |
| Marcotte Landing | Locale | 12 | Avoyelles | 31 06 46 N | 091 42 25 W |
| Marden Lake Bayou | Gut | 47 | Bossier | 32 28 12 N | 093 35 01 W |
| Maree Michel Canal | Canal | 2 | Vermilion | 30 00 16 N | 092 29 26 W |
| Marengo Bend Revetment | Levee | 11 | Concordia | 31 35 43 N | 091 30 14 W |
| Margaret Roane Developmental Center | School | 93 | Lincoln | 32 31 08 N | 092 37 35 W |
| Margaret Statue | Park | 2 | Orleans | 29 56 27 N | 090 04 19 W |
| Marguerite | Populated Place | 2 | St. Mary | 29 52 35 N | 091 40 40 W |
| Maria | Populated Place | 3 | St. Mary | 29 43 55 N | 091 25 27 W |
| Marias Branch | Stream | | St. Tammany | 30 39 07 N | 089 52 19 W |
| Maribel Village (subdivision) | Populated Place | 17 | East Baton Rouge | 30 29 28 N | 091 06 40 W |
| Marie B Riviere Elementary School | School | -1 | Jefferson | 30 00 57 N | 090 07 25 W |
| Marine Baptist Church | Church | 1 | Jefferson | 29 57 57 N | 090 09 30 W |
| Marine Bayou | Stream | | Pointe Coupee | 30 52 34 N | 091 47 28 W |
| Marine Shale Processors Incorporated Heliport | Airport | 1 | St. Mary | 29 39 46 N | 091 07 42 W |
| Marine Shale Processors Incorporated Heliport | Airport | 3 | Terrebonne | 29 35 55 N | 090 40 04 W |
| Maringouin | Populated Place | 6 | Iberville | 30 29 29 N | 091 31 10 W |
| Maringouin Oil Field | Oilfield | 6 | Iberville | 30 29 03 N | 091 29 35 W |
| Maringouin School | School | 5 | Iberville | 30 28 49 N | 091 31 08 W |
| Marion | Populated Place | 55 | Union | 32 54 05 N | 092 14 31 W |
| Marion Abramson Senior High School | School | -2 | Orleans | 30 01 49 N | 089 58 19 W |
| Marion Church | Church | 39 | Union | 32 56 53 N | 092 14 32 W |
| Marion Gas Field | Oilfield | 45 | Union | 32 57 00 N | 092 13 56 W |
| Marion High School | School | 5 | Calcasieu | 30 15 22 N | 093 11 11 W |
| Marion High School | School | 61 | Union | 32 54 18 N | 092 14 34 W |
| Marion Pass | Channel | -3 | Plaquemines | 29 13 06 N | 089 12 43 W |
| Marion Post Office | Post Office | 48 | Union | 32 54 03 N | 092 14 48 W |
| Marionville (historical) | Populated Place | 39 | Allen | 30 48 55 N | 092 50 31 W |
| Mark (historical) | Populated Place | 7 | West Baton Rouge | 30 21 02 N | 091 15 07 W |
| Mark Beach Bayou | Stream | | Union | 32 57 38 N | 092 25 38 W |
| Marked Tree Pens (historical) | Locale | 50 | Beauregard | 30 42 46 N | 093 16 45 W |
| Markee | Populated Place | 63 | Vernon | 30 55 37 N | 093 06 56 W |
| Market Plaza Shopping Center | Locale | 52 | Caddo | 32 32 28 N | 093 46 29 W |
| Market Square Shopping Center | Locale | -2 | Orleans | 30 01 47 N | 089 58 55 W |
| Market Street Plaza Shopping Center | Locale | 51 | Caddo | 32 32 41 N | 093 46 44 W |
| Market Street Wharf | Locale | 3 | Orleans | 29 55 46 N | 090 03 48 W |
| Marklee Island | Island | 0 | Vermilion | 29 51 01 N | 092 03 57 W |
| Marksville | Populated Place | 25 | Avoyelles | 31 07 41 N | 092 03 58 W |
| Marksville Catholic School | School | 25 | Avoyelles | 31 07 28 N | 092 03 48 W |
| Marksville City Hall | Building | 26 | Avoyelles | 31 07 42 N | 092 03 52 W |
| Marksville Elementary School | School | 25 | Avoyelles | 31 07 38 N | 092 04 17 W |
| Marksville High School | School | 26 | Avoyelles | 31 07 39 N | 092 04 24 W |
| Marksville Middle School | School | 25 | Avoyelles | 31 07 37 N | 092 03 21 W |
| Marksville Municipal Airport | Airport | 23 | Avoyelles | 31 05 41 N | 092 04 08 W |
| Marksville Oil Field | Oilfield | 23 | Avoyelles | 31 09 59 N | 092 04 25 W |
| Marksville Post Office | Post Office | 26 | Avoyelles | 31 07 38 N | 092 04 02 W |
| Marksville Public Library | Building | 26 | Avoyelles | 31 07 33 N | 092 03 58 W |
| Marksville State Historic Site | Park | 24 | Avoyelles | 31 07 29 N | 092 02 52 W |
| Marksville Townsite Oil Field | Oilfield | 24 | Avoyelles | 31 08 36 N | 092 04 53 W |
| Marktree Baptist Church (historical) | Church | 50 | Beauregard | 30 42 45 N | 093 16 44 W |
| Marl Branch | Stream | | Natchitoches | 31 20 18 N | 092 57 32 W |
| Marler Cemetery | Cemetery | 62 | Rapides | 31 13 18 N | 092 42 23 W |
| Marlin Airport | Airport | 23 | Madison | 32 23 11 N | 091 11 05 W |
| Marlin Branch | Stream | | Winn | 31 46 20 N | 092 40 53 W |
| Marlow Branch | Stream | | Vernon | 30 56 24 N | 093 06 04 W |
| Marlow Cemetery | Cemetery | 71 | Vernon | 30 57 46 N | 093 05 45 W |
| Marlow Church | Church | 65 | Vernon | 30 57 13 N | 093 06 41 W |
| Marmande Canal | Canal | 0 | Terrebonne | 29 27 43 N | 090 47 03 W |
| Marmande Ridge | Ridge | 1 | Terrebonne | 29 26 50 N | 090 49 33 W |
| Marone Point | Cape | 0 | St. Mary | 29 38 07 N | 091 38 56 W |
| Marquez Canal | Canal | -1 | Orleans | 30 04 05 N | 089 48 10 W |