| Brown Marsh Township, Bladen County, North Carolina | |
| Settlement Type: | Township |
| Image Map1: | Map of North Carolina highlighting Bladen County.svg |
| Map Caption1: | Location of Bladen County in North Carolina |
| Subdivision Type: | Country |
| Subdivision Name: | United States |
| Subdivision Type1: | State |
| Subdivision Name1: | North Carolina |
| Subdivision Type2: | County |
| Subdivision Name2: | Bladen |
| Subdivision Type4: | Municipality |
| Unit Pref: | Imperial |
| Area Footnotes: | [1] |
| Area Total Km2: | 87.53 |
| Elevation Max Footnotes: | [2] |
| Elevation Max Ft: | 124 |
| Elevation Max Point: | northwest of Clarkton, North Carolina |
| Elevation Min Ft: | 65 |
| Elevation Min Point: | Brown Marsh Swamp |
| Population Total: | 1,865[3] |
| Population As Of: | 2010 |
| Timezone1: | EST |
| Utc Offset1: | -4 |
| Timezone1 Dst: | EDT |
| Utc Offset1 Dst: | -5 |
| Area Codes: | 910, 472 |
| Area Total Sq Mi: | 33.80 |
| Population Density Sq Mi: | 55.18 |
Brown Marsh Township, population 1,865, is one of fifteen townships in Bladen County, North Carolina. Brown Marsh Township is 33.8sqmi[1] in size and is located in southern Bladen County. The Town of Clarkton, North Carolina is within Brown Marsh Township.
Brown Marsh Township is drained by Brown Marsh Swamp and a tributary, Bigfoot Swamp. All of these streams are part of the larger Waccamaw River drainage.