Act Now to Stop War and End Racism (ANSWER), also known as International A.N.S.W.E.R. and the ANSWER Coalition, is a United States–based protest umbrella group consisting of many antiwar and civil rights organizations. Formed in the wake of the September 11th attacks, ANSWER has since helped to organize many of the largest anti-war demonstrations in the United States, including demonstrations of hundreds of thousands against the Iraq War. The group has also organized activities around a variety of other issues, ranging from the Israel/Palestine debate to immigrant rights to Social Security to the extradition of Luis Posada Carriles.

ANSWER characterizes itself as anti-imperialist, and its steering committee consists of socialists, communists, civil rights advocates, and left-wing or progressive organizations from the Muslim, Arab, Palestinian, Filipino, Haitian, and Latin American communities. Many of ANSWER's lead organizers had ties to the International Action Center and Workers World Party at the time of ANSWER's founding.

ANSWER has faced criticism from other anti-war groups for its affiliations, tactics at demonstrations, and allegedly sectarian approach to joint anti-war work. It also faced criticism from various sources for its claimed anti-Zionist politics.

The organization's national headquarters are in Washington, D.C.