Imaginaerum (also promoted as Imaginaerum by Nightwish) is a 2012 fantasy film co-written and directed by Stobe Harju. It was developed with and features music from Finnish symphonic metal band Nightwish's seventh studio album of the same name; Nightwish's keyboardist and songwriter Tuomas Holopainen co-wrote the film. Imaginaerum, which is produced by Markus Selin from Solar Films Inc. along with Nightwish, is the feature film debut of director Stobe Harju.

It received grants from the Finnish Film Foundation, a Finnish government institution. The film received $575,000 toward its $3.7 million budget. The film was originally titled Imaginarium, but the title was later changed to Imaginaerum in order to avoid mix-ups. The film was released on 23 November 2012 in Finland, followed by releases in Germany (21 March 2013), Australia (22 October 2014), and North America (16 June 2015).