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House of the Dragon Season 3 has premiered. HBO announced a June 21, 2026 debut in the United States on HBO and HBO Max. Here’s how the announced cast breaks down between performers HBO identified as returning and additional actors named for the season.
Who is returning for Season 3?
HBO’s production announcement explicitly identifies 22 performers as Season 3 returning cast. The season-level designation confirms their place in the announced ensemble; it does not mean every actor appears in every episode or indicate how much screen time each receives.
| Actor | Character |
|---|---|
| Matt Smith | Prince Daemon Targaryen |
| Emma D’Arcy | Princess Rhaenyra Targaryen |
| Olivia Cooke | Alicent Hightower |
| Steve Toussaint | Lord Corlys Velaryon, “the Sea Snake” |
| Rhys Ifans | Otto Hightower |
| Fabien Frankel | Ser Criston Cole |
| Ewan Mitchell | Prince Aemond Targaryen |
| Tom Glynn-Carney | King Aegon II Targaryen |
| Sonoya Mizuno | Mysaria |
| Harry Collett | Prince Jacaerys “Jace” Velaryon |
| Bethany Antonia | Lady Baela Targaryen |
| Phoebe Campbell | Lady Rhaena Targaryen |
| Phia Saban | Queen Helaena Targaryen |
| Jefferson Hall | Lord Jason Lannister and Ser Tyland Lannister |
| Matthew Needham | Lord Larys Strong |
| Tom Bennett | Role not stated in the cited credits |
| Kieran Bew | Role not stated in the cited credits |
| Kurt Egyiawan | Role not stated in the cited credits |
| Freddie Fox | Ser Gwayne Hightower |
| Clinton Liberty | Role not stated in the cited credits |
| Gayle Rankin | Role not stated in the cited credits |
| Abubakar Salim | Role not stated in the cited credits |
HBO’s announcement supplies the 22-name returning list. The role credits above are listed where supported by the cited Season 3 credits; for the other returning performers, the available cited material does not establish a character assignment.
Which actors are new or newly named for Season 3?
HBO’s production-start announcement names Tommy Flanagan as Lord Roderick Dustin and Dan Fogler as Ser Torrhen Manderly. It also describes James Norton as previously announced in the role of Ormund Hightower. A later HBO season roster includes those performers alongside other additions.
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| Actor | Character identified in cited material | What the announcements establish |
|---|---|---|
| Tommy Flanagan | Lord Roderick Dustin | Named as an addition in HBO’s production announcement |
| Dan Fogler | Ser Torrhen Manderly | Named as an addition in HBO’s production announcement |
| James Norton | Ormund Hightower | Identified by HBO as previously announced |
| Tom Cullen | Ser Luthor Largent | Included in HBO’s later season roster; role listed in the cited credits |
| Joplin Sibtain | Ser “Bold” Jon Roxton | Included in HBO’s later season roster; role listed in the cited credits |
| Barry Sloane | Role not stated in the cited material | Included in HBO’s later season roster |
“New” can describe different things: new to the show, newly announced for Season 3, or simply named in a later season roster. HBO’s production announcement explicitly calls Flanagan and Fogler additions and treats Norton as previously announced. The broader later roster also includes returning actors, so appearing on it alone does not make someone a newcomer.
What does the cast list tell you—and what doesn’t it?
The announcements establish membership in the Season 3 ensemble, not a complete episode-by-episode cast list. They do not confirm that each named performer appears in every episode, rank the actors by prominence, or provide a reliable measure of screen time. Role credits are available for some names, but the cited material does not identify a character for every actor.
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House of the Dragon is based on George R. R. Martin’s Fire & Blood. The book is the source material for the series, rather than a Season 3 script or a cast directory.
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Sources
- HBO/WBD production-start announcement, including the returning cast and named additions: HBO production announcement
- HBO/WBD Season 3 announcement, including the US premiere date and later cast roster: HBO Season 3 announcement
- Season 3 role credits: Rotten Tomatoes cast and crew listing
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
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