The third season of House of the Dragon premiered on HBO on June 21, 2026, and concluded on August 9, 2026, consisting of eight episodes that continue the brutal civil war known as the "Dance of Dragons." Based on George R. R. Martin's Fire & Blood, the season follows the escalating conflict between Rhaenyra Targaryen (Emma D'Arcy) and her half-brother Aegon II Targaryen, as both the Black and Green Councils scramble for allies across Westeros. The season features a large ensemble cast including Matt Smith, Olivia Cooke, and newcomer James Norton (as Ormund Hightower), with filming taking place from March to October 2025 under showrunner Ryan Condal. The premiere drew 21.5 million viewers, and the season averaged 33 million per episode by its finale, earning critical praise for its production values, visual effects, writing, Ramin Djawadi's score, and standout performances. Critics on Rotten Tomatoes gave the season a 91% approval rating, calling it a "reinvigorated and riveting" installment, and a fourth and final season was ordered in November 2025.