Norbert Wiener is frequently cited as the youngest person to receive a PhD from Harvard University, earning his doctorate in Mathematical Logic in 1912 at the age of 17.
Other notable young graduates and record-holders from Harvard include:
Eugenie Carys de Silva: Known as the youngest person to graduate from Harvard University overall. She earned a Master’s degree in Intelligence Studies from the Harvard Division of Continuing Education at age 16.
William James Sidis: Holds the record for the youngest person ever to enroll at Harvard University, entering at age 11 in 1909. He graduated cum laude with a Bachelor of Arts at age 16 in 1914.
Noam Elkies: While he earned his PhD from Harvard at age 20 in 1987, he became the youngest person to ever receive tenure as a full professor at Harvard at age 26