Nonviolent Communication (NVC) is an approach to communication based on principles of nonviolence. It is not a technique to end disagreements, but rather a method designed to increase empathy and improve the quality of life of those who utilize the method and the people around them. Nonviolent Communication evolved from concepts used in person-centered therapy, and was developed by clinical psychologist Marshall Rosenberg beginning in the 1960s and 1970s. There is a large ecosystem of workshops and clinical materials about NVC. Rosenberg's book Nonviolent Communication: A Language of Life, popular as a psychotherapy textbook, is considered the authoritative text about the concept. Marshall Rosenberg also taught NVC in a number of video lectures available online; the workshop recorded in San Francisco is the most well-known.

NVC is a communication tool with the goal of firstly creating empathy in the conversation. The idea is that once there is empathy between the parties in the conversation, it will be much easier to talk about a solution which satisfies all parties' fundamental needs. The goal is interpersonal harmony and obtaining knowledge for future cooperation. Notable concepts include rejecting coercive forms of discourse, gathering facts through observing without evaluating, genuinely and concretely expressing feelings and needs, and formulating effective and empathetic requests. Nonviolent Communication is used as a clinical psychotherapy modality and it is also offered in workshops for the general public, particularly with regards to seeking harmony in relationships and at workplaces.