Collider ranks the ten most significant character deaths from Season 3 of *House of the Dragon*, which wrapped with Queen Rhaenyra Targaryen holding an unstable Iron Throne while Aegon II remains at large and Lord Ormund Hightower's army fights for Prince Daeron. The season is framed as a marked improvement on Season 2, delivering more action and narrative progress as the Dance of the Dragons escalates, with several long-running and newly introduced characters killed off along the way.

– Lord Jasper "Ironrod" Wylde (No. 10): the Master of Laws and Aegon II loyalist is beheaded by Daemon Targaryen after the fall of King's Landing.
– Captain Sharako Lohar (No. 9): the Triarchy admiral recruited by Tyland Lannister has her fleet destroyed and is killed by Alyn of Hull at the Battle of the Gullet.
– Lord Jason Lannister (No. 8): twin brother of Tyland and ruler of the Westerlands, who once sought to marry Rhaenyra; further details of his death are cut off in the source text.
– The full list continues down to the season's most impactful death at No. 1, though the remaining entries were not available in this excerpt.