BITSMUN Pilani | 353 followers on LinkedIn. BITSMUN Pilani is one of the oldest and most prestigious Model UN conference in the country. Over the years, it has emerged as one of the biggest MUN conferences in India with over 400 participants from various countries who engage in high quality of debate on various issues that affect the world. Adding to the diversity we have brought delegates from different countries like Sri Lanka, Japan, Germany, Russia and many more.