The second season of the American superhero streaming television series Titans premiered on DC Universe on September 6, 2019, and concluded on November 29, consisting of 13 episodes.

The season sees Dick Grayson (Thwaites) form a new Titans team comprising Rachel Roth (Croft), Gar Logan (Potter), and Jason Todd (Walters) in his original San Francisco base.

As Deathstroke looks to eliminate the Titans, with his daughter Rose Wilson (Zhang) also taking part in the fight, the heroes face another threat from Cadmus Laboratories when they encounter runaway test subject Conner (Orpin).

Series regulars Brenton Thwaites, Anna Diop, Teagan Croft, and Ryan Potter reprise their roles from the first season as Dick Grayson, Kory Anders, Rachel Roth, and Gar Logan.

Season 1 guest stars Curran Walters, Conor Leslie, Minka Kelly, and Alan Ritchson return as Jason Todd, Donna Troy, Dawn Granger, and Hank Hall, after being promoted to series regular status.

[21] After the character was teased by co-creator Geoff Johns,[22] Esai Morales was cast as Deathstroke,[23] with Chella Man and Chelsea Zhang portraying his children Jericho and Rose.

[4][6] Other casting additions include Genevieve Angelson as Cadmus Laboratories scientist Dr. Eve Watson,[8] Michael Mosley as Dr. Light,[2] Oluniké Adeliyi as burlesque dancer Mati Matisse,[25] Hanneke Talbot as Shimmer,[10][11] Demore Barnes as Wintergreen,[26] and Damaris Lewis as Kory's sister Blackfire.

[30] Production was temporarily put on hold in July due to accidental death of special effects coordinator Warren Appleby;[31][32] the season 2 premiere is dedicated in his memory.

[38] Den of Geek reviewer Aaron Sagers said the premiere "would have served as an excellent season 1 finale", but concluded that "it feels quite a bit like a much-needed course correction for this series" and gave it a 3.5/5.

[40] Praising the sixth episode "Conner" and Joshua Orpin's performance in the title role, Sagers said that "it is a strong introduction of the anticipated character, and Titans makes up for the fact we've waited so long in the season for it".

[44] The death of Donna Troy in the finale was widely panned as illogical and unnecessary, with several reviewers questioning if electrical discharge from a transmission tower would have been sufficient to kill the character.

[46] Donna's actress Conor Leslie agreed with the criticism during a 2021 interview, noting the episode aired shortly before a Wonder Woman 1984 trailer that depicted Diana Prince unaffected by lightning.