The Where's My Mind Tour was the second headlining concert tour by American singer-songwriter Billie Eilish. It was in support of her debut EP Don't Smile at Me (2017), and consisted of concerts in North America and Europe. The tour was announced in November 2017, with dates being released at the same time. The set list featured a majority of the songs from Don't Smile at Me. The tour was positively received by critics.

Billie Eilish Pirate Baird O'Connell is an American singer and songwriter. She first gained public attention in 2015 with her debut single "Ocean Eyes", written and produced by her brother Finneas O'Connell, with whom she collaborates on music and live shows. In 2017, she released her debut extended play (EP), Don't Smile at Me. Commercially successful, it reached the top 15 of record charts in numerous countries, including the US, UK, Canada, and Australia.