No, it is not. Some people think that it crosses over into religion because of some of the spiritual aspects of the practice. However, like Buddhism, it is probably best not to categorise it as a religion and more of a philosophical approach to life that marries both the inner self and the outer, bodily one. In certain Taoist traditions, there is a strong association with the benefits and practice of tai chi. However, even Taoism, which some people consider to be a religion, is really more of a philosophy in many regards despite its similarities with other religious rituals. Few Taoists, even the most religiously minded ones, would consider tai chi to have anything to do with organised religion. Consequently, people of many faiths, such as Hindus, Muslims and Christians, all practice tai chi without thinking that it interferes or contradicts their other spiritual beliefs.