Aliette Opheim plays as Jonna Waldemar in Katla.
Aliette Opheim is the top #1 member of the cast and appears in 27 episodes.

Ingvar Sigurdsson plays as Þór in Katla.
Ingvar Sigurdsson is the top #2 member of the cast and appears in 8 episodes.

Baltasar Breki Samper plays as Kjartan in Katla.
Baltasar Breki Samper is the top #3 member of the cast and appears in 8 episodes.

Þorsteinn Bachmann (born 25 October 1965) is an Icelandic actor. He is known for his role as Móri in Life in a Fishbowl. In 2015 he won an Edda Award for that same role. Bachmann grew up in the Fossvogur area of Reykjavík, Iceland before moving to Breiðholt when he was 10 years old. He did not do well in school in the early years. Looking back he remembers, that he was barely able to read or write before changing schools from Fossvogur to the one in Breiðholt. Bachmann graduated from the Icelandic Drama School in 1991. Since graduation he has worked with theatre groups in Reykjavík and Akureyri and was president of the latter for a few years. He has held many acting courses, and has served as a teacher at both the Icelandic Drama School and the Icelandic Film School. In 2013 he worked with the National Theatre of Iceland. Before every premiere Bachmann goes to the gym, goes swimming and finishes off with a sauna. "This is something I've always done and goes with every film or stage premiere".

Þorsteinn Bachmann plays as Gísli in Katla.
Þorsteinn Bachmann is the top #4 member of the cast and appears in 8 episodes.

Sólveig Arnarsdóttir plays as Magnea in Katla.
Sólveig Arnarsdóttir is the top #5 member of the cast and appears in 8 episodes.

Guðrún Ýr Eyfjörð plays as Gríma in Katla.
Guðrún Ýr Eyfjörð is the top #6 member of the cast and appears in 8 episodes.

Íris Tanja Flygenring plays as Ása in Katla.
Íris Tanja Flygenring is the top #7 member of the cast and appears in 8 episodes.

Haraldur Ari Stefánsson is an Icelandic actor. He was formerly backing vocalist and tambourine-player in the band Retro Stefson.

Haraldur Ari Stefánsson plays as Einar in Katla.
Haraldur Ari Stefánsson is the top #8 member of the cast and appears in 8 episodes.

Birgitta Birgisdóttir plays as Rakel in Katla.
Birgitta Birgisdóttir is the top #9 member of the cast and appears in 8 episodes.

Helga Braga Jónsdóttir plays as Vigdís in Katla.
Helga Braga Jónsdóttir is the top #10 member of the cast and appears in 8 episodes.