Authors
- N.G. Hadden
- Tom Hadden
- S.V. Haddleton
- Keith Haddock
- Sybil Haddock
- Haddon
- Alfred C. Haddon
- Celia Haddon
- John Haddon
- Mark Haddon
- Richard Haddon
- Stuart Haddon-Riddoch 1
- G.W. Haddow
- Wilhelm Hadeler
- H. Jack Haden
- Arnulf Hader
- Berta Hader
- Elmer Hader
- Hadfield
- A.M. Hadfield
- Alice Mary Hadfield
- Andrew Hadfield
- C.N. Hadfield
- Charles Hadfield 2
- Chris Hadfield
- E.C.R. Hadfield 1
- John Hadfield
- Miles Hadfield 1
- P. Heywood Hadfield
- Peter Hadfield
- R.L. Hadfield
- Adnan Hadidi
- Evan Hadingham
- N. Hadjinicolaou
- Costas N. Hadjipateras
- Kofi Buenor Hadjor
- Tony Hadland
- Christopher Hadley 1
- Dawn M. Hadley
- Dennis Hadley 2
- Dunstan Hadley 1
- Eric Hadley
- Guy Hadley
- Michael L. Hadley 1
- Milton Hadley 1
- Stephen Hadley
- Tessa Hadley
- Vera Hadley
- H.R. Hadlow
- Jasper Hadman
- W.H. Hadow
- Emperor Hadrian
- John Hadrill
- Phil Hadwen
- Walter R. Hadwen
- Hugo Hadwiger
- Paul Haefliger
- A. Haeflilger
- Glenn Haegerstam
- E.C.M. Haes
- James E. Haff
- Louis F. Haffen
- Sebastian Haffner 1
- Khwajah Shamsu-D Mahommad Hafiz
- Heinz Hafner
- Katie Hafner
- Harold D. Hafs
- Werner Haftmann
- Paul Hagan
- William T. Hagan
- George G. Hagar
- Rose Hagar-Marvell 1
- Spencer Hagard
- Britt Hagarty
- Patsy Hagate
- Bodil Hagbrink
- Popje Hage 1
- A.L. Hagedoorn
- Dan Hagedorn 3
- Rosemary Hagedorn
- John Hagel
- Ward J.M. Hagemeijer
- Ernest Hagen
- Gunther Hagen
- J.S. Hagen
- Louis Hagen
- Toni Hagen
- Victor W. V. Hagen
- Victor W.V. Hagen
- Walter Hagen
- K.R. Hagenbach
- Fred Hageneder
- Christian Hager
- M. Hager
- Werner Hager
- Solveig Hagerstrom
- McKeel Hagerty
- R.J. Haggar
- Reginald G. Haggar
- A.M. Haggard