http://www.linuxjournal.com/xstatic/community/events is one road to
Linux Industry Events?
It contains IIT Bombay's Techfest as the lone entry from India. Foss.in is not listed.
From what I have seen from attending Techfest a couple of years back,
it is not a particularly Linux or free software oriented event. They did invite Mark Shuttleworth and might use GNU/Linux in their events (eg., programming contests), but that does NOT make it a "Linux Industry Event". They do have an event named "Open Software", but the software is not necessarily "open source".
Wonder what the definition of "Linux Industry Event" might be.
Cheerio, Debarshi