Philippe Cousteau, Jr.
- Birthplace: Los Angeles, CA
- Current Hometown: Arlington, VA
- Series and Specials: Ocean's Deadliest, Spring Watch USA
- Areas of Expertise: Environment and conservation; Philippe serves on the boards of directors of the Blue Frontier Foundation; the Environmental Project and Earthpark; the Honorary Board of the Everglades Foundation; the advisory board of the Algalita Marine Research Foundation; the Global Peace Film Festival; the Ocean Energy Council; and Oceana's Ocean Council. He is a member of the Smithsonian Institution's Ocean Science Initiative Council. He holds a master's degree in history from St. Andrews University.
- Family Status: Single
- Favorite Quote: "When one tugs at a single string in nature, one finds it connected to the rest of the world." - John Muir
- Favorite Spots in the World: Edinburgh, Scotland, and Paris, France
- Favorite Spots in the U.S.: The mountains of Colorado
- For Fun: Snowboarding, rock climbing
- Other: Philippe Cousteau is the son of Jan and Philippe Cousteau Sr. and the grandson of Captain Jacques-Yves Cousteau. Philippe is also president of EarthEcho International, a nonprofit environmental education and conservation organization founded by Philippe and his sister Alexandra in memory of their father. Through EarthEcho, Philippe currently is producing several media and documentary projects and seeks to leverage new and emerging media platforms to offer compelling storytelling with a modern sensibility.