- Benton School, a school in Holt County
- Brushy School (historical), a school in Schuyler County
- Colfax School (historical), a school in Sullivan County
- Ditch Number 1, a canal in Dunklin County
- Ditch Number 24, a canal in Stoddard County
- Edina Reservoir Section 7, a reservoir in Knox County
- Floyd School (historical), a school in Gentry County
- Lateral Number 4, a canal in Dunklin County
- Lick Creek, a stream in Marion County
- Lippstadt School, a school in Warren County
- Little Blue Branch, a stream in Bollinger County
- Little Brushy School (historical), a school in Butler County
- Little Creek, a stream in Boone County
- Little Crooked Creek, a stream in Bollinger County
- Little Eagle Pond (historical), a lake in Mississippi County
- Little Fox School, a school in Clark County
- Little Hurricane Creek, a stream in Oregon County
- Little Lead Creek, a stream in Lincoln County
- Little Mill Creek, a stream in Carter County
- Little Peno Creek, a stream in Pike County
- Little Saline Creek, a stream in Sainte Genevieve County
- Little Shawnee Creek, a stream in Shannon County
- Little Sugar Creek, a stream in Lincoln County
- Littleby Creek, a stream in Audrain County
- Locust Branch, a stream in Chariton County
- Lone Star School (historical), a school in Wayne County
- Long Branch, a stream in Montgomery County
- Long Creek, a stream in Chariton County
- Long Gravel Branch, a stream in Madison County
- Long Lake, a lake in Saint Charles County
- Longfellow School, a school in City of Saint Louis
- Lookout School (historical), a school in Crawford County
- Lost Creek, a stream in Washington County
- Lost Hill School (historical), a school in Gasconade County
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- Lost Lake, a lake in Crawford County
- Lousy Creek, a stream in Linn County
- Loutre River, a stream in Montgomery County
- Loutre Valley School (historical), a school in Montgomery County
- Love Lake School (historical), a school in Macon County
- Lowell School, a school in City of Saint Louis
- Lower Carr Creek School (historical), a school in Shannon County
- Lower Imboden School, a school in Reynolds County
- Lower Reservoir, a reservoir in Reynolds County
- Lower Turkey Creek School, a school in Wayne County
- Lowery School (historical), a school in Chariton County
- Lowland School (historical), a school in Livingston County
- Luesseville Lake, a reservoir in Saint Charles County
- Lyons School (historical), a school in Mercer County
- Madison School, a school in City of Saint Louis
- Main Ditch Number 2, a canal in Dunklin County
- Main Ditch Number 36, a canal in Dunklin County
- Main Ditch Number 8, a canal in Pemiscot County
- Malden Spring, a spring in Ripley County
- Mallard Dam, a reservoir in Ripley County
- Mallory Lake, a reservoir in Randolph County
- Mammoth Creek, a stream in Jefferson County
- Mams Slough, a stream in Audrain County
- Manacle Creek, a stream in Callaway County
- Mann Spring, a spring in Reynolds County
- Many Springs Branch, a stream in Oregon County
- Maple Island Conservation Area, a park in Saint Charles County
- Maple Lake, a lake in Lewis County
- Maple Slough Ditch, a canal in Mississippi County
- Mud College School (historical), a school in Grundy County
- Number 1 Canal, a canal in Holt County
- Pine School (historical), a school in Sullivan County
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