Here is a list of some of the people that improvise. More information including videos, recordings, and even books may be found on each organist’s individual page.
Organists
- Jörg Abbing
- Nigel Allcoat
- Martin Bacot
- George Baker
- Martin Baker
- Bernard Bartelink
- Sebastian Bartmann
- Kerry Beaumont
- Henri-Franck Beaupérin
- Edoardo Bellotti
- Jan Bender
- Justin Bischof
- Frédéric Blanc
- Klaas Bolt
- Lorenzo Bonoldi
- Guy Bovet
- David Briggs
- Jeffrey Brillhart
- Herbert Buffington
- David Cassan
- Sophie-Veronique Cauchefer-Choplin
- Francis Chapelet
- Michel Chapuis
- Maurice Clerc
- Pierre Cochereau
- Eric Dalest
- Firmin Decerf
- Jeanne Demessieux
- Frédéric Denis
- Yves Devernay
- Vincent Dubois
- Jean-Baptiste Dupont
- Marcel Dupré
- Maurice Duruflé
- Petr Eben
- Piet van Egmond
- Thierry Escaich
- Jürgen Essl
- Peter Ewers
- Eugenio Maria Fagiani
- Rolande Falcinelli
- László Fassang
- André Fleury
- Richard Grayson
- Jean-Jacques Grünenwald
- Jean Guillou
- Jan Hage
- Naji Hakim
- Anthony Hammond
- Gerre Hancock
- Hans Haselböck
- Noël Hazebroucq
- Tom Hazelton
- Anton Heiller
- François-Henri Houbart
- Timothy Howard
- André Isoir
- Kay Johannsen
- Michele Johns
- Jan Jongepier
- Michael Joseph
- Bálint Karosi
- Piet Kee
- Melinda Kistetenyi
- Kalevi Kiviniemi
- Albert de Klerk
- Jos van der Kooy
- Gereon Krahforst
- Otto Maria Krämer
- Peter Krasinski
- Ronny Krippner
- Ann Labounsky
- Jean Langlais
- Olivier Latry
- Gilles Leclerc
- Philippe Lefebvre
- Jean-Pierre Leguay
- Franz Lehrndorfer
- Samuel Liégeon
- Gaston Litaize
- Rudolf Lutz
- Loïc Mallié
- Paul Manz
- André Marchal
- Baptiste-Florian Marle-Ouvrard
- Wayne Marshall
- Alexandre Mason
- Johannes Mayr
- Thierry Mechler
- Olivier Messiaen
- Rudolf Meyer
- Duncan Middleton
- Aaron David Miller
- Gerben Mourik
- Frédéric Muñoz
- Bruce Neswick
- Tomasz Adam Nowak
- Paolo Oreni
- Jan Overduin
- János Pálúr
- Dorothy Papadakos
- Olivier Penin
- Olivier Perin
- Pierre Pincemaille
- Vidas Pinkevicius
- Peter Planyavsky
- William Porter
- Jan Raas
- Antoine Reboulot
- Mathias Rehfeldt
- Karl Richter
- John Riley
- Jason Roberts
- McNeil Robinson
- Lionel Rogg
- Daniel Roth
- Pamela Ruiter-Feenstra
- Léonce de Saint-Martin
- Patrick A. Scott
- Pierre Segond
- Wolfgang Seifen
- Franz Josef Stoiber
- Zsigmond Szathmáry
- Jacques Taddei
- Willem Tanke
- Stephen Tharp
- Louis Thiry
- Timothy Tikker
- Tom Trenney
- Charles Tournemire
- Jaroslav Tůma
- John Vandertuin
- Xaver Varnus
- Franck Vaudray
- Johann Vexo
- Louis Vierne
- Harald Vogel
- Sietze de Vries
- Julian Wachner
- Ansgar Wallenhorst
more to follow….
or see the list on wikipedia here.