- Duncan Boswell
- Duncan Bourne
- Duncan Buck
- Duncan Bye
- Duncan Calam
- Duncan Channon Acquisitions
- Duncan D’Penha
- Duncan Disposal Systems Acquired By Rizzo Environmental Services
- Duncan Douglass
- Duncan Energy Partners Acquisitions
- Duncan Evans
- Duncan Firman
- Duncan Gerard
- Duncan Greene
- Duncan Harvey
- Duncan Harvie
- Duncan Herrington
- Duncan Inverarity
- Duncan Lawrie Holdings Acquisitions
- Duncan Macintosh
- Duncan MacPherson
- Duncan McGregor
- Duncan O'Brien
- Duncan Orr
- Duncan Priston
- Duncan Ralph
- Duncan Ramsay
- Duncan Reek
- Duncan Reid
- Duncan Robinson
- Duncan Smith
- Duncan Solutions Acquired By Anacacia Capital
- Duncan Solutions Acquired By Navient
- Duncan Stiles
- Duncan Sykes
- Duncan Systems Acquired By Lippert Components
- Duncan Walker
- Duncan Williams
- Duncton Group Limited Acquired By Provident Financial
- Dundas & Wilson LLP
