Chris Guillebeau (born April 4, 1978) is an American author, entrepreneur, traveler, and speaker. He’s best known for The Art of Non‑Conformity and The $100 Startup, inspiring unconventional living and creative self‑employment. Guillebeau visited every country in the world before age 35 and hosts the daily podcast Side Hustle School, guiding people to generate extra income without quitting their jobs.