Samuel Greene Arnold Jr. (April 12, 1821February 14, 1880) was an attorney and politician from Rhode Island. A Republican, he was most notable for his service as lieutenant governor and as a United States senator.
- Occupation
- politician, historian, lawyer, jurist
- Position held
- United States senator
- Citizenship
- United States
- Born
- April 12, 1821
- Died
- February 14, 1880