AiML - Advances in Modal Logic http://turing.wins.uva.nl/~mdr/AiML/
A bi-annual workshop and book series. The aim of the workshop series is to report on important new developments in pure and applied modal logic, at varying locations throughout the world. The book series is based on the workshops.
TABLEAUX http://i12www.ira.uka.de/TABLEAUX/
The International Conference on Automated Reasoning with Analytic Tableaux and Related Methods, held every year since 1992. Links to individual meetings.
LICS http://logik.mathematik.uni-freiburg.de/lics/
IEEE Symposium on Logic in Computer Science: an annual international forum on theoretical and practical topics in computer science that relate to logic in a broad sense.