Authors from J to L
- Jacob and Wilhelm Grimm
- Jaka Smerkolj Simoneti
- Jan Cvitkovič
- Janez Žmavc
- Jason Robert Brown
- Jean Anouilh
- Jean Baptiste Poquelin Molière
- Jean Cocteau
- Jean Genet
- Jean Giraudoux
- Jean-Baptiste Poquelin Molière
- Jean-Claude Grumberg
- Jennifer Haley
- Jevgenij Švarc
- Jim Cartwright
- Joe Orton
- John Boynton Pristley
- John Knittel
- John Patrick Shanley
- John Pielmeier
- John Webster
- Jon Fosse
- Jordan Plevnesh
- Joseph Kesselring
- Josip Jurčič - Ivan Rob
- Joze Javorsek
- Joze Snoj - Emil Abersek
- Juan Radrigán
- Jure Karas
- Karel Čapek
- Karl Wittlinger
- Katja Hensel
- Kay Pollak, Carin Pollak
- Klaus Eidam
- Kolektivno gledališče Sakerdona Mihajloviča, TNK, Grunt
- Kristina Brenk
- Leo Birinsky
- Leslie Stevens
- Ljubomir Simović
- Ljubomir Simovic
- Lope de Vega
- Luigi Pirandello
- Lukas B. Suter
- Lyman Frank Baum
- Lyudmila Razumovskaya