Heiða Rún Sigurðardóttir[1] (HAY-da; born 22 May 1988), known professionally as Heida Reed, is an Icelandic actress and model.

[2] Reed was born in Iceland, the middle of three children of a music teacher father and a dental hygienist mother.

"[9] In April 2015, Reed co-starred in the world premiere of a new play, Scarlet, by Sam H Freeman at Southwark Playhouse exploring slut-shaming and cyberbullying and their emotional repercussions.

[6] The same year, Reed was cast in a major role in the British historical TV drama Poldark, which was based on the novels of the same title, playing the part of Elizabeth.

[11][12] She played the part of Professor Jocelyn Peabody in the B7 Audio adaptations of some of the Dan Dare stories, which have been broadcast on BBC Radio 4 Extra a number of times, most recently in 2022.