- Alchemy (Analytical Psychology)
- Alcoholism
- Âle, Pierre (1900-1976)
- Alexander, Franz Gabriel (1891-1964)
- Alienation
- Allendy, René Félix Eugène (1889-1942)
- Allendy-Nel-Dumouchel, Yvonne (1890-1935)
- Allergic Object Relationship
- Allergy
- Allgemeine Ärztliche Gesellschaft Für Psychotherapie
- Almanach der Psychoanalyse
- Alpha Function
- Alpha-Elements
- Alter Ego
- Althusser, Louis (1918-1990)
- Altruism
- Alvarez de Toledo, Luisa Agusta Rebeca Gambier de (1915-1990)
- Amae, Concept of
- Ambivalence
- Amentia
- American Academy of Psychoanalysis
- American Imago
- American Psychoanalytic Association
- Amnesia
- Amphimixia/Amphimixis
- Amplification (Analytical Psychology)
- Anaclisis/Anaclitic
- Anaclitic Depression
- Anagogical Interpretation
- Anal-Sadistic Stage
