"Last Thing on My Mind" is the third and final single released from Irish singer-songwriter Ronan Keating's third studio album, Turn It On (2003). It was also included on LeAnn Rimes' Greatest Hits album as well as her Best of album. The song was released on 3 May 2004, peaking at number five on the UK Singles Chart. In the US, it was not officially released to country radio, although the music video received heavy rotation on the VH1 Country channel. It did become an adult contemporary hit, reaching number 16 on the Billboard Adult Contemporary chart. Elsewhere, the song reached the top 40 in Austria, Denmark, and Ireland.