The Eurovision Song Contest 1970 was the 15th edition of the annual Eurovision Song Contest and took place in Amsterdam, Netherlands. Organised by the European Broadcasting Union (EBU) and host broadcaster Nederlandse Omroep Stichting (NOS), the contest was held at the RAI Congrescentrum on 21 March 1970, and was hosted by Dutch television presenter Willy Dobbe.

The Eurovision Song Contest, often known simply as Eurovision or by its initialism ESC, 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.