The Eurovision Song Contest 2018 was the 63rd edition of the Eurovision Song Contest. It took place in Lisbon, Portugal, following the country's victory at the 2017 contest with the song "Amar pelos dois" by Salvador Sobral. Organised by the European Broadcasting Union (EBU) and host broadcaster Rádio e Televisão de Portugal (RTP), the contest was held at the Lisbon Arena, and consisted of two semi-finals on 8 and 10 May, and a final on 12 May 2018. The three live shows were presented by Portuguese television presenters Filomena Cautela, Sílvia Alberto and Catarina Furtado, and Portuguese-American actress Daniela Ruah, marking the first time that the contest was presented by four hosts.

The Eurovision Song Contest, often known simply as Eurovision, is an international song competition organised annually by the European Broadcasting Union. Each participating country submits an original song to be performed live and transmitted to national broadcasters via the Eurovision and Euroradio networks, with competing countries then casting votes for the other countries' songs to determine a winner.