- Nastygram
- NBI
- Nerd
- Net Present Value
- Netco
- Netiquette
- Netizen
- Netlag
- Netois
- Netpromotion
- Network Marketing
- Networking
- Netzplan
- Neukundengewinnung
- Neuroleadership
- New Economy
- New- Business-Development
- Newbie
- NGO
- NIAT
- Niederlage
- Nielsengebiet
- Nio-Teile
- NLP
- NN
- Nocom
- Normalfolge
- Nosedive
- Not amount to a hill of beans
- NPT
- NPV
- NRN
- Number cruncher
- Nutzen
- Nutzschwelle
- Nutzwertanalyse
- NVE
- NWW
- O
- Obligo
- OD
- OE
- OEM
- Off-Line
- Offside
- Oh-no-second
- Old Economy
- On a roll
- On the lam
- On-Line
- Onboarding
- One-to-One-Marketing
- Ongoing
- Ongoing costs
- OOC
- Open Innovation
- Open Space Technology
- Open-Collar-Worker
- Open-Space-Konferenz
- Operating Profit
