These devices are not region locked.
I bought some Chromecast devices in Japan while I live in Europe.
All of them worked just fine, just be sure to check out the power supply and voltage. 😉
@rahuls85, we hope that answered your question, but to add to what RXShorty, since the Chromecast devices aren't officially supported in India, some of its features and apps might not be available.
Thanks for the help, RXShorty.