Ragna Margrét Brynjarsdóttir (born 30 March 1990) is an Icelandic former basketball player and a former member of the Icelandic national basketball team.
She won the Icelandic championship in 2007 and 2009 as a member of Haukar and was named to the Úrvalsdeild Domestic All-First Team in 2011 and 2017.
Following her retirement in 2019 she started working as an analyst on Domino's Körfuboltakvöld, a weekly show covering the Úrvalsdeild karla and Úrvalsdeild kvenna leagues.