LUMS Model UN Society | 886 followers on LinkedIn. The LUMS Model UN Society, or LUMUN, is Pakistan's first Model UN society, and one of its largest student-run societies. It was founded in 2002 by a group of undergraduates at the Lahore University of Management Sciences. Each year, the society conducts the annual LUMUN conference on the LUMS campus, gathering over a thousand students from all corners of Pakistan.