The 2018 Hong Kong Legislative Council by-election was held on 11 March 2018 for four of the six vacancies in the Legislative Council of Hong Kong (LegCo) - the Hong Kong Island, Kowloon West and New Territories East geographical constituencies and the Architectural, Surveying, Planning and Landscape functional constituency - resulting from the disqualification of six pro-democrat and localist Legislative Council members over the 2016 oath-taking controversy. The by-election for the two other seats was not held due to pending legal appeals by the two disqualified legislators.