| Marietta, Kansas | |
| Settlement Type: | Unincorporated community |
| Image Map1: | Map of Marshall Co, Ks, USA.png |
| Map Caption1: | KDOT map of Marshall County (legend) |
| Pushpin Map: | Kansas#USA |
| Pushpin Label: | Marietta |
| Pushpin Label Position: | left |
| Coordinates: | 39.9431°N -96.6086°W |
| Subdivision Type: | Country |
| Subdivision Name: | United States |
| Subdivision Type1: | State |
| Subdivision Name1: | Kansas |
| Subdivision Type2: | County |
| Subdivision Name2: | Marshall |
| Subdivision Type3: | Township |
| Established Title: | Founded |
| Established Title1: | Platted |
| Named For: | Mrs. Marieta Mann |
| Unit Pref: | Imperial |
| Elevation Ft: | 1188 |
| Population Density Sq Mi: | auto |
| Timezone: | CST |
| Utc Offset: | -6 |
| Timezone Dst: | CDT |
| Utc Offset Dst: | -5 |
| Postal Code Type: | ZIP code |
| Area Code Type: | Area code |
| Area Code: | 785 |
| Blank Name: | FIPS code |
| Blank Info: | 20-44625 |
| Blank1 Name: | GNIS ID |
| Blank1 Info: | 472691 |
Marietta is an unincorporated community in Marshall County, Kansas, United States.
Marietta was named for Mrs. Marieta Mann.[1] Marietta had a post office from 1895 until 1959.[2]
The community is served by Marysville USD 364 public school district.