Symphonic metal is a term used to describe heavy metal music that has symphonic elements; that is, elements that sound similar to a classical symphony. Symphonic metal is both a genre of metal and a name given to several subgenres of other metal genres, and as such, both forms of usage have slightly varying definitions. The genre refers to bands that combine aspects of varying metal genres, with signature female-led vocals and operatic/classical themes to give the music a feeling of being a symphony.

When referring to bands from other genres, it refers to bands who use minor classical and operatic themes in the bands music similar as to what is found in the symphonic metal genre, to show they are more "symphonic" than normal bands of their genre. "Symphonic" can also describe metal with elements resembling non-symphonic classical music, although this definition is not frequently used.