The third season of the American superhero streaming television series Titans premiered on HBO Max on August 12, 2021, and concluded on October 21, consisting of 13 episodes.

In the third season, the Titans team of Dick Grayson (Thwaites), Kory Anders (Diop), Gar Logan (Potter), Conner (Orpin), Dawn Granger (Kelly), and Hank Hall (Ritchson) travel to Gotham City after learning that their former teammate Jason Todd (Walters) was murdered.

Tasked with protecting the city in the absence of Bruce Wayne (Iain Glen), the Titans find themselves targeted by a resurrected Jason, now calling himself Red Hood.

Dick, working alongside former vigilante partner and love interest Barbara Gordon (Welch) in her new role as police commissioner, is forced to receive assistance from incarcerated criminal Jonathan Crane (Kartheiser) in stopping Jason.

Meanwhile, Titan Rachel Roth (Croft) trains with the Amazons in Themyscira as she attempts to resurrect fallen teammate Donna Troy (Leslie).

[16][17] San Francisco was originally intended to be setting from the second season, but filming being pushed into the fall and winter months resulted in the story being moved to Gotham.

[19][20] Walker described Gotham as "a huge character" in season 3 that "brings out leadership qualities that [Dick] has to assess to see whether they're his own - true Nightwing - or are they patterns [inherited from] a father who he needs to differentiate himself from?".

[21] Series regulars Brenton Thwaites, Anna Diop, Teagan Croft, Ryan Potter, Conor Leslie, Curran Walters, Joshua Orpin, Alan Ritchson, and Minka Kelly reprise their roles as Dick Grayson, Kory Anders, Rachel Roth, Gar Logan, Donna Troy, Jason Todd, Conner, Hank Hall, and Dawn Granger, alongside Damaris Lewis as Blackfire, who was promoted to series regular status after guest starring in the previous season.

[5] Other casting additions include Savannah Welch as Barbara Gordon,[1] Jay Lycurgo as Tim Drake,[4] Vincent Kartheiser as Dr. Jonathan Crane,[2] and Kimberly-Sue Murray as Lady Vic.