- John Witherspoon
- John Wittwer
- John Wm. Macy Overview
- John Wolfel
- John Wolff
- John Wood
- John Wood
- John Wood Group Overview
- John Wood Group - Environment & Infrastructure business Overview
- John Wood Group - Industrial Services Business Overview
- John Wood Group - Nuclear Business Overview
- John Woodberry
- John Woods
- John Worley
- John Woyton
- John Wrafter
- John Wright
- John Wright
- John Wright
- John Wuestling
- John Yantsulis
- John Yates
- John Yoon
- John Yoshida
- John Young
- John Young
- John Yung
- John Yurconic Agency Overview
- John Zacharias
- John Zagula
- John Zak
- John Zapalac?
- John Zhang
- John Zhao
- John Zhao
- John Zimmerman
- John Zink Company Overview
- John Zutter
- John “Jack” Anton
- John “Yogi” Spence