Nonresistance (or non-resistance) is "the practice or principle of not resisting authority, even when it is unjustly exercised". At its core is discouragement of, even opposition to, physical resistance to an enemy. It is considered as a form of principled nonviolence or pacifism which rejects all physical violence, whether exercised on individual, group, state or international levels. Practitioners of nonresistance may refuse to retaliate against an opponent or offer any form of self-defense. Nonresistance is often associated with particular religious groups, such as Anabaptist Christianity.

Sometimes non-resistance has been seen as compatible with, even part of, movements advocating social change. An often-cited example is the movement led by Mohandas Gandhi in the struggle for Indian Independence. While it is true that in particular instances (e.g., when threatened with arrest) practitioners in such movements might follow the line of non-resistance, such movements are more accurately described as cases of nonviolent resistance or civil resistance.