| Otto John Hehnke | |
| Birth Date: | c. 1870 |
| Birth Place: | Hamburg, Germany |
| Death Place: | Scottsbluff, Nebraska |
| Occupation: | Architect |
Otto John Hehnke (c. 1870 – September 24, 1944) was a German-born American architect.[1] He lived in Scottsbluff, Nebraska, where he designed the Fontenelle Apartment House and the Scottsbluff Carnegie Library, two buildings listed on the National Register of Historic Places.