WCNA-33
33rd World Convention of NA
20-23 August 2009
Centre Convencions Internacional (CCIB)
Barcelona, Spain

WCNA-34
34th World Convention of NA
1-4 September 2011
San Diego Convention Center
San Diego, CA

WCNA—35
35th World Convention of NA
29 August – 1 September 2013
Pennsylvania Convention Center
Philadelphia, PA