Authors
- Ourselves 1
- Bill Oursler
- Fulton Oursler
- John H. Ousbey
- Ian Ousby 1
- P.D. Ouspewky
- R.F. Outcault 2
- Grenbry Outhwaite
- Ida Renthal Outhwaite 1
- Ida Rentoul Outhwaite
- Benjamin Outram
- George Outram
- James Outram
- Gabriel Julien Ouvrard
- Philip Ouvry
- Michal Ovcacik
- Lily Oven
- D.W. Ovenden
- Denys Ovenden
- Graham Ovenden
- Mark Ovenden
- Robert Ovens
- A. Ovenston
- Keith Over
- Luke Over
- Mark Over
- Campbell Overend
- Unice Overend
- T. Donald Overfield
- Jack Overhill
- M.A. Overington
- Michael Overman
- Phyllis Overman
- Ruth Overman 1
- Bonaro Overstreet
- Harry Overstreet
- Robert M. Overstreet
- Bill Overton
- Jenny Overton
- John Overton
- Tom Overton
- John Overy
- P. Overy
- Paul Overy
- R.J. Overy 2
- Richard Overy
- Rasmus Ovesen 1
- Ovid
- J.D. Ovington 1
- A. Lloyd Owen
- Alex Owen
- Annie Owen
- Arthur Owen
- Arwyn Owen
- Bill Owen
- Bishop Owen
- Brian R. Owen
- Bruce M. Owen
- Bryn Owen 1
- C.C. Owen
- Catherine Owen
- Charles Owen 1
- D. Huw Owen
- D.D.R. Owen 1
- D.F. Owen
- D.G. Owen
- D.L. Lloyd Owen
- Dafydd Owen
- Daniel Owen
- David Owen 2
- David E. Owen 1
- David J. Owen
- David Lloyd Owen
- Denis Owen
- Dilys Owen
- Dora Owen
- Dorothy M. Owen 1
- Edward Owen
- Eleanor J. Owen 1
- Elias Owen
- Ellis Owen
- Eluned E. Owen
- Fiona Owen
- Frances Owen
- Francis Owen
- Frank Owen
- Gale R. Owen
- Gareth Owen 2
- Gay Owen
- George Owen 2
- Geraint Dyfnallt Owen 1
- Goronwy Owen
- Griffith Owen 1
- Guillermo Owen 2
- Gwen Owen
- Harold Owen
- Hedydd Isambard Owen
- Henry Owen 1
- Heulwen Isambard Owen
- Hugh Owen 2