Iain Glen was born and raised in Edinburgh, Scotland, and instructed at the Edinburgh Academy, an autonomous school for young men (now co-instructive), trailed by the University of Aberdeen. He then prepared at RADA in London, where he won the Bancroft Gold Medal. Glen is the most youthful sibling of Hamish Glen, theater executive, aesthetic chief of the Belgrade Theater, Coventry, and in the past imaginative executive of the Dundee Repertory Theater. 

He was married to Susannah Harker from 1993 to 2004, they have one child, Finlay. He married Charlotte Emmerson in the year 2005, and they have two little girls; Mary and Juliet. In 1990, Glen won the Silver Bear for Best Actor at the 40th Berlin International Film Festival for his part in Silent Scream. Around the same time he was given a role as Hamlet, Prince of Denmark in Tom Stoppard's film adjustment of his play Rosencrantz and Guildenstern are Dead, which won the Golden Lion at the Venice Film Festival. He was designated for an Olivier Award for his execution in The Blue Room inverse Nicole Kidman. 

It was declared in 2009 that Glen would star as Ser Jorah Mormont in the HBO arrangement Game of Thrones. In 2010, he assumed the part of Father Octavian, pioneer of a faction of Clerics who were on a mission against the Weeping Angels in The Time of Angels and Flesh and Stone, a two scene story which shaped piece of the fifth season of the resuscitated TV arrangement Doctor Who. He showed up in the second arrangement of Downton Abbey Click to look into! >> Read More... Downton Abbey , as Sir Richard Carlisle, a tabloid distributor who is a suitor too, and along these lines drew Lady Mary.

In the 2012 BBC show arrangement Prisoners' Wives, he plays Paul, the spouse of Francesca, whose agreeable life comes smashing down when he is detained for medication trafficking. Likewise in 2012, he featured in another 4-section BBC Radio 4 adjustment of The Count of Monte Cristo, composed by Sebastian Baczkiewicz, coordinated by Jeremy Mortimer and Sasha Yevtushenko. In 2013, he played the lead in the new play Longing. From 6 December 2013 until right on time January 2014, Glen featured close by Richard McCabe in Fortune's Fool at the Old Vic, coordinated by Lucy Bailey. In 2015, Glen gave the voiceover to Vauxhall Mokka commercial.