M. J. Abadie Ralph Abraham Carl Abrahamsson Mones Abu-Asab, Ph.D. Peter Mark Adams Patch Adams, M.D. Lee Adams Janet Adler Heinrich Cornelius Agrippa
Naisha Ahsian Toscun Bayrak al-Jerrahi Abd al-Kerim al-Jili Ibn al-Husayn al-Sulami Leslie M. Alexander, Ph.D., RH(AHG) Rolf Alexander, M.D. Sarane Alexandrian D. S. Allan René Alleau
Sasha Allenby Stéphane Allix Nathaniel Altman Pablo Amaringo Hakima Amri, Ph.D. Phyllida Anam-Áire Rosemarie Anderson, Ph.D. Lynn Andrews Jack Angelo
Mike Annesley Ruth Schumann Antelme Marcus T. Anthony, Ph.D. Robert Apatow, Ph.D. Michael A. Aquino, Ph.D. Ibn Arabi Nicky Arden José Argüelles Suzanne Arms J. D. Arthur Rohit Arya Dolores Ashcroft-Nowicki