Proceedings Seventh Workshop on Logical and Semantic Frameworks, with Applications, LSFA 2012, Rio de Janeiro, Brazil, September 29-30, 2012

This document contains the proceedings of the Seventh International Workshop on Logical and Semantic Frameworks, with Applications, which was held on September 29 and 30, 2012, in Rio de Janeiro, Brazil. It contains 11 regular papers (9 long and 2 short) accepted for presentation at the meeting, as well as extended abstracts of invited talks by Torben Bra\"uner (Roskilde University, Denmark), Maribel Fern\'andez (King's College London, United Kingdom), Edward Hermann Haeusler (PUC-Rio, Brazil) and Alexandre Miquel (\'Ecole Normale Sup\'erieure de Lyon, France).