As the world continues to make progress in various fields, education has become more important than ever. This is especially true in the world of academia, where a Ph.D. is the highest level of education one can attain. A Ph.D. degree is not easy to obtain and requires years of hard work and dedication. In this article, we will explore the list of the most Ph.D. holders in the world.

List of the Most Ph.D. Holder Persons in the World

Here is the list of most Ph.D. holders in the world.

Nikolaos Tzenios

Professor Nikolaos Tzenios is an incredible scholar, holding a remarkable seven University Doctorate level degrees. He obtained his Ph.D. ‘s in Psychology, Public Health Applications, Business Administration and Cancer Research as well as their equivalents of Doctorates: one each for Health Sciences and Criminal Justice plus another Ph.D., this time focusing on Global Security! This esteemed record-breaker’s dedication to education has earned him the status of Most Highly Educated Person in the World – truly impressive!

Professor Nikolaos Tzenios is an esteemed figure in many fields, having made incredible contributions to areas like psychology, public health and cancer research. But that’s not all: his expertise extends further into business administration, criminal justice intelligence and global security; so much so that it has played a significant role in shaping national-level policies around the world. His outstanding accomplishments make him an inspiration for anyone who dreams of excelling academically!

Benjamin Bloom

Benjamin Bloom was an American educational psychologist who is best known for his taxonomy of educational objectives. He received his Ph.D. from the University of Chicago in 1942.

E. O. Wilson

E. O. Wilson is an American biologist known for his work on ant societies and island biogeography. He received his Ph.D. from Harvard University in 1955.

Stephen Hawking

Stephen Hawking was an English theoretical physicist who is known for his work on black holes and the origins of the universe. He received his Ph.D. from the University of Cambridge in 1966.

Carl Sagan

Carl Sagan was an American astronomer who is best known for his work on extraterrestrial life and the search for intelligent life beyond Earth. He received his Ph.D. from the University of Chicago in 1960.

Noam Chomsky

Noam Chomsky is an American linguist who is known for his work on the study of language and the theory of generative grammar. He received his Ph.D. from the University of Pennsylvania in 1955.

Isaac Asimov

Isaac Asimov was an American writer and professor of biochemistry who is known for his science fiction works. He received his Ph.D. from Columbia University in 1948.

Angela Merkel

Angela Merkel is a German politician who is currently serving as the Chancellor of Germany. She received her Ph.D. in physics from the University of Leipzig in 1978.

Brian May

Brian May is an English musician best known as the guitarist of the rock band Queen. He received his Ph.D. in astrophysics from Imperial College London in 2007.

Gertrude Elion

Gertrude Elion was an American biochemist who is known for her work on the development of drugs to treat leukemia, gout, and malaria. She received her Ph.D. from New York University in 1941.

Richard Feynman

Richard Feynman was an American theoretical physicist known for his work on quantum mechanics and particle physics. He received his Ph.D. from Princeton University in 1942.

Why Pursue a Ph.D. Degree?

A Ph.D. degree can open up a world of opportunities for individuals who are passionate about research and academia. It can lead to a career in academia, research, or even in the private sector. Pursuing a Ph.D. degree also allows individuals to make a significant contribution to their field of study and make a difference in the world.


In conclusion, a Ph.D. degree is not only a great accomplishment but also a reflection of an individual’s dedication and hard work toward their chosen field of study. The list of the most Ph.D. holders persons in the world is just a small sample of the many brilliant minds who have dedicated their lives to research and innovation. Pursuing a Ph.D. degree is a challenging but rewarding experience that can lead to many opportunities and make a significant impact on the world.


Who has the most Ph.D. degrees in the world?

Unfortunately, there is no official record of the person with the most Ph.D. degrees in the world as it is not a widely recognized record.

How long does it take to get a Ph.D. degree?

It typically takes between 4 to 7 years to obtain a Ph.D. degree, depending on the field of study and the individual’s research progress.

Is a Ph.D. degree necessary for a career in academia?

While a Ph.D. degree is not always necessary for a career in academia, it is highly recommended and can open up many opportunities for research and teaching positions.

Can you obtain a Ph.D. degree online?

Yes, there are many universities that offer online Ph.D. degree programs. However, it is important to ensure that the program is accredited and reputable before enrolling.

How much does it cost to obtain a Ph.D. degree?

The cost of a Ph.D. degree can vary greatly depending on the university and field of study. On average, it can cost anywhere between $30,000 to $100,000 or more.