Brynhildur Þórarinsdóttir (born 1970) is an Icelandic children's writer.
Among her children's books are Njala from 2002, Egla from 2004, and Laxdæla from 2006.
She was awarded the Icelandic Children's Book Prize in 2004 for her Leyndardómur ljónsins and the Nordic Children's Book Prize in 2007.
She lectures at the University of Akureyri.
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