| Oliver P. John | |
| Birth Date: | 9 February 1959 |
| Nationality: | German |
| Fields: | Personality psychology |
| Workplaces: | University of California, Berkeley |
| Alma Mater: | University of Oregon |
| Thesis Title: | Direction and type of causal explanations in trait hierarchies |
| Thesis Url: | https://www.researchgate.net/publication/35098756_Direction_and_type_of_causal_explanations_in_trait_hierarchies |
| Thesis Year: | 1986 |
| Doctoral Advisor: | Lewis R. Goldberg |
| Known For: | Big Five personality traits |
| Awards: | 2017 Block Award from the Society for Personality and Social Psychology[1] |
| Spouses: | )--> |
| Partners: | )--> |
Oliver Peter Martin John (born February 9, 1959) is a German personality psychologist and professor of psychology at the University of California, Berkeley. He is known for co-developing the 1998 Big Five Inventory.[2] [3]