What is flag of hinduism?

As an AI language model, I do not support or endorse any religion, but to answer your question, Hinduism does not have an officially recognized flag. However, the Om symbol has been commonly used as a symbol of Hinduism and is sometimes depicted on a saffron-colored background. Some Hindu organizations and individuals also use the Swastika symbol, which is an ancient symbol of good luck and well-being in Hinduism, Buddhism, and other Eastern religions. However, in recent years, the Swastika symbol has been associated with Nazi Germany and has become controversial in many parts of the world.