| Andreas von Gail (Andreas Gaill) | |
| Freiherr | |
| More: | no |
| Father: | Philippe I von Gail |
| Birth Date: | 12 November 1526 |
| Birth Place: | Cologne |
| Death Place: | Cologne |
| Religion: | Catholic |
| Occupation: | jurist and diplomat |
Andreas Gaill (12 November 1526 - 11 December 1587) was one of the leading jurists of the Holy Roman Empire.
After studies in Cologne, Orléans, Leuven and Bologna, Gaill worked as an advocate in his hometown Cologne. In 1558, he was appointed to the Imperial Chamber Court. From 1569 on, he served on the Aulic Council in Vienna and, prior to his death, as Chancellor to the Elector of Cologne.
Gaill is best remembered for his 1578 work Practicae observationes ad processum iudiciarium imperialis camerae, the first systematic compilation of Chamber Court jurisprudence. It exerted an eminent influence on the practice of law in the Empire and served as a template for most later German compilations of court decisions.