=== Salg og certificeringer ===
{|class="wikitable sortable"
|-
! Land
! [[Certificering af musiksalg|Certificering]]
|-
|Finland
|3× Platinum<ref>{{cite web|url=http://www.ifpi.fi/tilastot/artistit/nightwish|title=Nightwish|publisher=}}</ref>
|-
|Germany
|Gold<ref>{{cite web|url=http://www.musikindustrie.de/gold_platin_datenbank/?action=suche&strTitel=Once&strInterpret=Nightwish&strTtArt=alben&strAwards=checked |title=Bundesverband Musikindustrie: Gold-/Platin-Datenbank |publisher=Musikindustrie.de |date= |access-date=2012-09-01}}</ref>
|-
|Greece
|Gold<ref name="Nightwish - The Official Website"/>
|-
|Poland
|Gold<ref name="Nightwish - The Official Website"/>
|-
|Slovakia
|Gold<ref name="Nightwish - The Official Website">{{cite web|url=http://www.nightwish.com/en/news|title=Nightwish - The Official Website|publisher=|access-date= 8. marts 2018|archive-date=31. oktober 2012|archive-url=https://web.archive.org/web/20121031001744/http://nightwish.com/en/news|url-status=dead}}</ref>
|-
|Switzerland
|Gold<ref>{{cite web|author=Steffen Hung |url=http://www.swisscharts.com/search_certifications.asp?search=nightwish |title=The Official Swiss Charts and Music Community |publisher=Swisscharts.com |date= |access-date=2012-09-01}}</ref>
|}
{{col-end}}
Musik Organisationer