| State House: | Mississippi |
| District: | Warren County |
| Termstart: | January 1900 |
| Termend: | January 1908 |
| Birth Date: | 18 August 1855 |
| Birth Place: | Ludlow, Mississippi |
| Party: | Democrat |
| Children: | 2 |
| Death Place: | Mississippi |
Otho Singleton Robbins (August 18, 1855 - 1927) was a Democratic member of the Mississippi House of Representatives, representing Warren County, from 1900 to 1908.
Otho Singleton Robbins was born on August 18, 1855, in Ludlow, Mississippi.[1] He was the son of Nathaniel Robbins, who represented Marion County in the Mississippi House in 1837, and his wife, Susan (Davis) Robbins. He attended the primary schools of Scott County. After reading law, he was admitted to the bar in 1880. He was a lawyer and a planter.[2] He was elected to the Mississippi House of Representatives, representing Warren County as a Democrat, in 1899. He was re-elected in 1903, for the 1904-1908 term. He died in Mississippi in 1927.[3]
Robbins married Mary Ellen Vick in 1886. They had two children, Fannie and Mamie. Robbins had no religious preference.