Iðunn Steinsdóttir was born on January 5, 1940 in Seyðisfjörður. After highschool she went on to study at Iceland's Teacher Training College, and graduated in 1981. Iðunn worked for the Coastal Shipping Line from 1960 - 1962 and then taught in children's schools for some years, both in Húsavík in the north of Iceland and in Reykjavík. Since 1987 she has concentrated on her writing career. Iðunn was a member of the board of Húsavík's Drama Company from 1968 – 1972, and sat on the board of the Soroptimist-club of Reykjavík from 1989 - 1991. She was on the editorial board of the journal Children and Books, published by IBBY in Iceland from 1985 – 1989, and co-edited the book Dagamunur (Make a Day of It), to commemorate the 70th anniversary of the Women's Clubs Association of the People of Þingeyjasýsla South (Kvenfélagssambands Suður-Þingeyinga 1975). Iðunn is the chairman of Children and Books, the Icelandic department of the IBBY association.
Iðunn Steinsdóttir's first published work was the children's book Knáir krakkar (Clever Kids) in 1982 and since then she has sent forward numerous children's books, among them the hugely popular books about the two pranksters Snuðra and Tuðra. Many short stories by Iðunn have appeared in the children's magazine Æskan (Youth), and she has also written stories for the children's hour on radio and television. Iðunn has written manuscripts for television films and series for children as well a writing the manuscript for the educational film Ég veðja á Ísland (I Put My Money on Iceland), for The National Centre for Educational Materials. She has written a number of textbooks for primary schools, as well as children's textbooks for The Icelandic Traffic Council. She has written many lyrics for songs. Iðunn has co-authored plays together with her sister, writer Kristín Steinsdóttir. Iðunn has received a number of awards for her writings.
Iðunn Steinsdóttir lives with her husband in Reykjavík. She has three grown children.
Publisher: Salka. Til baka