Midwest Philosophy of Mathematics Workshop - An annual conference. Last meeting: University of Notre Dame, Indiana, USA; 11-12 November 2006. - http://philosophy.nd.edu/news/events/philosophy-math-conference/index.shtml
Does Mathematics Require a Foundation? - Arché - The Centre for Philosophy of Logic, Language, Mathematics and Mind, University of St. Andrews, Scotland, UK; 12--15 August 2002. - http://www.st-andrews.ac.uk/~arche/pages/conferences/conference2002prog.html
Abstraction Workshop V - Arché Centre for Philosophy of Logic, Language, Mathematics and Mind, University of St Andrews, Scotland, UK; 24--25 May 2002. - http://www.st-andrews.ac.uk/~arche/pages/workshops/abstractionwrks5.html
The Nature of Mathematical Proof - A Royal Society Discussion Meeting. London, UK; 18--19 October 2004. - http://www.royalsoc.ac.uk/event.asp?id=1334
Foundation of the Formal Sciences IV - The History of the Concept of the Formal Sciences. Rheinische Friedrich-Wilhelms-Universität Bonn, Germany; 14--17 February 2003. - http://www.math.uni-bonn.de/people/fotfs/IV/
20th WCP: Philosophy of Mathematics - Papers given at the Twentieth World Congress of Philosophy; Boston, Massachusetts, USA; 10--15 August 1998. - http://www.bu.edu/wcp/MainMath.htm
PMP2002 - Perspectives on Mathematical Practices, an International Conference on the Philosophy of Mathematics. Brussels University (VUB), Belgium; 24--26 October 2002. - http://www.vub.ac.be/CLWF/PMP2002/
Conference on Programmes in Mathematics - University of Hertfordshire, Watford Campus in Aldenham, UK; 13--14 July 1999. - http://www.herts.ac.uk/humanities/philosophy/mathconf.html
Alfred Tarski Centenary Conference - Stefan Banach International Mathematical Center, Warsaw, Poland; 28 May -- 1 June 2001. - http://www.mimuw.edu.pl/TARSKI/