The Grey Warden seal, featuring a griffon a symbol of nobility and, in centuries past, the mount of the Grey Wardens.
The flames represent purification, just as Andraste was purified by flame upon her martyrdom at the height of the first Exaled March. The sword is an emblem of mercy in Chantry symbolism because Hessarian ran Andraste through with his sword to save her from a slow and painful death.
The House of Tides which supposedly represent the Qunari as a force of nature, an irresistible tide that will crash upon shores without relent. The Qunari in Kirkwall bear this symbol on their skin.
The all-seeing eye is the insignia of the Seekers of Truth. It represents the Seekers' role as investigators and inspectors of the Chantry. Uncovering the hidden practice of magic and seeking to stamp out its corruption, even with in their own ranks.
This stylized knot work representation of a dragon evolved from a symbol of rebellion etched into countless walls during the time when Kirkwall was a center for the Tevinterslave trade. It was an image that catalyzed the slaves who overthrew the ruling magisters, and while the symbol has changed, its meaning has not: Kirkwall is a city unto itself, beholden to no one.