The Inscriptiones Graecae (IG), Latin for Greek inscriptions, is an academic project originally begun by the Prussian Academy of Science, and today continued by its successor organisation, the Berlin-Brandenburg Academy of Sciences and Humanities.
From 1902 to 1931, Ulrich von Wilamowitz-Moellendorff was in control of the project; he reorganised and re-energised the IG, turning it into one of the most important series for the publication of source material in Classical studies.
The preparation of each individual volume is entrusted to external scholars, though the Berlin Academy retains the final editing rights.
The Academy also maintains a collection of "squeezes" (paper copies) of Greek inscriptions.
Editors of previous volumes include Wilhelm Dittenberger, Friedrich Hiller von Gaertringen, Johannes Kirchner and Günther Klaffenbach.