OpenMath is a language for exchanging mathematical formulae across applications (such as computer algebra systems). From 2010 its importance has increased in that OpenMath Content Dictionaries were adopted as a foundation of the MathML 3 W3C recommendation, the standard for mathematical formulae on the Web. The topics of the OpenMath Workshop include • Feature Requests (Standard Enhancement Proposals) and Discussions for going beyond OpenMath 2; • Further convergence of OpenMath and MathML 3; • Reasoning with OpenMath; • OpenMath on the Semantic Web; • New OpenMath Content Dictionaries; • Software using or processing OpenMath The 31. OpenMath Workshop included three talks of which two were contributed to this volume. James H. Davenport & Michael Kohlhase