"Last to Know" is a song by American recording artist Pink. It was written by her and producer Tim Armstrong for her third studio album Try This (2003). The track was released in some parts of Europe as a single in 2004, peaking just outside the top twenty in the Holland and the UK (her first single in the UK not to hit the Top 20). In Austria and Switzerland the single peaked inside the top fifty. In places such as Australia, the song was released to radio and digital download but never had a physical single release.