Epica is a Dutch symphonic metal band, founded by guitarist and vocalist Mark Jansen.

Current members:
Mark Jansen – rhythm guitar, growled vocals, co-lead vocals (2002–present)
Coen Janssen – keyboards, synthesizer, piano (2002–present)
Simone Simons – lead vocals (2002–present)
Ariën van Weesenbeek – drums (2007–present; session member: 2006–2007)
Isaac Delahaye – lead guitar, backing vocals (2009–present)
Rob van der Loo – bass (2012–present)

Former members:
Yves Huts – bass (2002–2012; guested in 2013)
Ad Sluijter – lead guitar (2002–2008; guested in 2013)
Jeroen Simons – drums (2002–2006; guested in 2013)
Helena Iren Michaelsen – lead vocals (2002)