| Otto | |
| Settlement Type: | Unincorporated community |
| Pushpin Map: | USA Wyoming#USA |
| Pushpin Map Caption: | Location within the state of Wyoming |
| Subdivision Type: | Country |
| Subdivision Name: | United States |
| Subdivision Type1: | State |
| Subdivision Name1: | Wyoming |
| Subdivision Type2: | County |
| Subdivision Name2: | Big Horn |
| Unit Pref: | Imperial |
| Population As Of: | 2000 |
| Population Total: | 50 |
| Population Density Km2: | auto |
| Timezone: | Mountain (MST) |
| Utc Offset: | -7 |
| Timezone Dst: | MDT |
| Utc Offset Dst: | -6 |
| Coordinates: | 44.4031°N -108.2739°W |
| Postal Code Type: | ZIP codes |
| Postal Code: | 82434 |
| Area Code: | 307 |
| Blank Name: | FIPS code |
| Blank1 Name: | GNIS feature ID |
| Blank1 Info: | 1592503 |
Otto is an unincorporated community in Big Horn County in the U.S. state of Wyoming. It was named for Otto Franc, a local cattle baron, sheriff and judge in the Big Horn Basin. The community is located along the Greybull River on Wyoming Highway 30 between Basin and Burlington.
Public education in the community of Otto is provided by Big Horn County School District #1. Children attend Burlington Elementary School (grades PK-6), Burlington Junior High School (grades 7–8), and Burlington High School (grades 9–12). All three campuses are located in the nearby town of Burlington.
Otto is mostly a farming community and is surrounded by many flood-irrigated fields. The main crops are; corn, sugar beets, beans and grains. In the community itself one can find a park where a baseball diamond, soccer field, playground equipment, and picnic benches can be found.