That will depend on the manufacturer, but I would not get my hopes up. Due to the differences in laws between countries, it's usually cheaper and easier to just produce a product for a specific region. Some element used in the construction might be perfectly legal in say India, but illegal in the EU or US. It could even be the other way around just as easily.
So, the best thing to do would probably be to contact the manufacturer of the board(s) you are looking at. I'd have to double check the warranties on motherboards, but I know Asus does have an international warranty for at least some products, so it's not inconceivable that other companies are similar.