W
- Jigme Khesar Namgyal Wangchuck, King of Bhutan
- Gar Waterman, sculptor (graduated 1974)
- Theodore Weld, abolitionist (graduated 1820)
- George Hoyt Whipple, winner of the Nobel Prize for Medicine in 1933 for cure for pernicious anemia.
- Reed Whittemore, poet and twice Poet Laureate Consultant in Poetry to the Library of Congress.
- George M. Whitesides, professor of chemistry at Harvard University.
- Olivia Wilde, actress (graduated 2002)
- Dick Wolf, television series creator and producer, creator of Law and Order
- Francesca Woodman, photographer
- Leonard Woods, fourth president of Bowdoin College
- Philip Wrigley, manufacturer, Wrigley's Chewing Gum (graduated 1915)
Read more about this topic: List Of Phillips Academy Alumni