Joseph McCabe published A Biographical Dictionary of Modern Rationalists in 1920 (London: Watts & Co.). Most (though not all) of those listed were also included in A Biographical Dictionary of Ancient, Medieval and Modern Freethinkers (1945)
A
- Firmin Abauzit
- Ernst Abbe
- Francis Ellingwood Abbot
- George Frederick Abbott
- Leonard Dalton Abbott
- Edmond About
- Thomas Achelis or Thomas Ludwig Bernhard Achelis ( mentioned in , his son)
- ACKERMANN, Louise V.
- ACOLLAS, Professor E.
- ACOSTA, Uriel
- ADAM, Professor Charles, D. es L.
- ADAMS, Charles Francis
- ADAMS, Francis W. L.
- ADAMS, John, President of the United States
- ADAMS, Robert
- ADAMSON, Professor Robert, Ph.D.
- ADCOCK, A. St. John
- ADICKES, Professor E., Ph.D.
- ADLER, Professor Felix, Ph.D.
- AHRENS, Professor Heinrich, Ph.D.
- AIKENHEAD, Thomas
- AIRY, Sir George B., K.C.B., D.C.L., LL.D., F.R.S.
- AITZEMA, Lieuwe van
- ALBEE, John
- ALCOTT, Amos Bronson
- ALEMBERT, Jean le Rond d'
- ALFIERI, Count V.
- ALGAROTTI, Count F.
- Thomas Clifford Allbutt
- ALLEN, Grant, B.A.
- ALLEN, Colonel Ethan
- ALLEN, John. M.D.
- ALLINGHAM, William
- ALLMAN, Professor G. J., LL.D., D.Sc., F.R.S.
- ALLSOP, Thomas
- ALTMEYER, Professor J. J., Ph.D., D.C.L.
- ALVIELLA, Count Goblet d'
- AMARI, Professor M.
- AMICIS, Edmondo de
- AMIEL, Henri F.
- ANDERSON, George
B
Ba
Be
Bi
Bo
Br
Bu
C
Ca
Ce
Co
D
Da
De
Di
Dr
Du
E
F
Fo
G
Ga
Gr
J
K
M
Ma
Me
Mo
N
O
P
R
Ra
Ro
W
Wi
X
Y
Z
References