Oscar Riddle
| Oscar Riddle | |
|---|---|
| Born | September 27, 1877 | 
| Died | November 29, 1968 (aged 91) | 
| Academic background | |
| Education | 
 | 
Oscar Riddle (September 27, 1877 – November 29, 1968) was an American biologist. He is known for his research into the pituitary gland and for isolating the hormone prolactin.