- Thomas Murphy
- Thomas Muynck
- Thomas Napier
- Thomas Natanek
- Thomas Nelson Acquired By HarperCollins Publishers
- Thomas Neuroth AG Acquired By Analog Devices
- Thomas Nilsson
- Thomas Norris
- Thomas Noto Jr.
- Thomas Nugent
- Thomas Nye
- Thomas Oberfrank
- Thomas Ochsenkiel
- Thomas Oh
- Thomas Oldweiler
- Thomas Olivier
- Thomas Oppenheimer
- Thomas Osborne
- Thomas Osborne
- Thomas Osterndorf
- Thomas Ostrom
- Thomas Outdoor Advertising Acquired By Link Media Outdoor
- Thomas Paillet
- Thomas Palm Westermann
- Thomas Palmer
- Thomas Pastore
- Thomas Paul
- Thomas Pöhler
- Thomas Pedulla
- Thomas Penn
- Thomas Peppard
- Thomas Peretti
- Thomas Petty
- Thomas Philippe
- Thomas Pilkerton
- Thomas Piocelle
- Thomas Pipe & Supply Acquired By Winsupply
- Thomas Piro
- Thomas Poletti
- Thomas Pollock
