He'll be the first president to visit the South Asian nation twice -- and the first in ages to make a long-distance trip just to stop in one single country. Obama also hosted India's new prime minister, Narendra Modi, in D.C. back in September.
It's clear that diplomatic relations with India have become a priority for the president - especially since pro-business, pro-America Modi rocketed to power last May. So if we're going to sidle up next to India and become better friends, we'd best get to know the country.
Here's our list of 18 fascinating facts you should know about India.