Oliver John

{{Short description|German psychologist (born 1959)}}

{{Distinguish|John Oliver}}

{{Infobox scientist

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| name = Oliver P. John

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| birth_date = {{birth date and age|1959|02|09}}

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| nationality = German

| fields = Personality psychology

| workplaces = University of California, Berkeley

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| 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

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| known_for = Big Five personality traits

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| awards = 2017 Block Award from the Society for Personality and Social Psychology{{Cite web |url=https://psychology.berkeley.edu/news/congratulations-oliver-john-receiving-society-personality-and-social-psychologys-2017-block |title=Congratulations to Oliver John on receiving the Society for Personality and Social Psychology's 2017 Block Award! |website=UC Psych |language=en |access-date=2018-05-09 |archive-date=2018-06-30 |archive-url=https://web.archive.org/web/20180630080906/https://psychology.berkeley.edu/news/congratulations-oliver-john-receiving-society-personality-and-social-psychologys-2017-block |url-status=live }}

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Oliver Peter Martin John (born February 9, 1959) is an American personality psychologist and professor of psychology at the University of California, Berkeley. He is known for co-developing the 1998 Big Five Inventory.{{Cite web |url=https://qz.com/1201773/we-took-the-worlds-most-scientific-personality-test-and-discovered-unexpectedly-sexist-results/ |title=We took the world's most scientific personality test—and discovered unexpectedly sexist results |last=Goldhill |first=Olivia |date=2018-02-11 |website=Quartz |language=en-US |access-date=2018-05-09 |archive-date=2018-06-30 |archive-url=https://web.archive.org/web/20180630081132/https://qz.com/1201773/we-took-the-worlds-most-scientific-personality-test-and-discovered-unexpectedly-sexist-results/ |url-status=live }}{{Cite news |url=https://www.thecut.com/2016/12/predict-your-scores-on-an-important-personality-test.html |title=Can You Predict Your Scores on an Important Personality Test? |last=Wu |first=Jesse Singal, Ashley |date=2016-12-21 |work=The Cut |access-date=2018-05-09 |language=en |archive-date=2018-11-16 |archive-url=https://web.archive.org/web/20181116114233/https://www.thecut.com/2016/12/predict-your-scores-on-an-important-personality-test.html |url-status=live }}