The Sanrizuka Struggle is a series of civil conflicts and riots involving the Japanese government and the agricultural community of Sanrizuka, comprising organised opposition by farmers, local residents, and leftist groups to the construction of Narita International Airport. The struggle stemmed from the government's decision to construct the airport in Sanrizuka without the involvement or consent of most area residents.

Narita is a city in Chiba Prefecture, Japan. As of 30 November 2020, the city had an estimated population of 131,852 in 63,098 households and a population density of 620 persons per km². The total area of the city is 213.84 square kilometres (82.56 sq mi). It is the site of Narita International Airport, one of the two main international airports serving the Greater Tokyo Area.