The third and final season of the American streaming television series Daredevil, which is based on the Marvel Comics character of the same name, follows Matt Murdock / Daredevil, a blind lawyer-by-day who fights crime at night. When Wilson Fisk is released from prison, Murdock must decide between hiding from the world or embracing his life as a hero vigilante. The season is set in the Marvel Cinematic Universe (MCU), sharing continuity with the films and other television series of the franchise. It was produced by Marvel Television in association with ABC Studios, with Erik Oleson serving as showrunner and series creator Drew Goddard acting as a consultant.

Charlie Cox stars as Murdock, and Vincent D'Onofrio portrays Fisk, with Deborah Ann Woll, Elden Henson, and Stephen Rider also returning from previous seasons; Joanne Whalley, Jay Ali, and Wilson Bethel join them. Former series regular Ayelet Zurer also returns in a guest role. The season was ordered in July 2016, with Oleson announced as the new showrunner for the season in October 2017. Filming began the following month and ended by June 2018, with the season adapting elements from the "Born Again" comic storyline.

The 13-episode season was released on October 19, 2018. Netflix canceled the series on November 29, 2018. Daredevil: Born Again, a revival series produced by Marvel Studios for Disney+, was announced in July 2022.

At the 2016 San Diego Comic-Con, Marvel and Netflix revealed the series had been renewed for a third season, with the expectation that Doug Petrie and Marco Ramirez would return as showrunners from the second season. In October 2017, it was announced that Erik Oleson would replace Petrie and Ramirez as showrunner for the season. The season had yet to be scheduled for release by the end of July 2018, and television critics wondered whether the quality of the season was to blame on this. Netflix VP Cindy Holland responded that the scheduling of the various Marvel Netflix series, especially the crossover miniseries The Defenders which required cast members from all of the series to come together, was to blame for the delay, and that the company had no issue with the quality of the season; on the contrary, Holland described the season as "fantastic" and felt it was a "real return to form" for the series.

The ending of the miniseries The Defenders, which sees Matt Murdock waking up in a convent surrounded by nuns after being presumed dead, implied elements of the season would be inspired by the "Born Again" story arc. Charlie Cox was excited to adapt "Born Again", calling it "an amazing story" and that the implications of the story on the season "would be very exciting". He cautioned, however, that it would not be a "page-for-page" adaptation, "because if you do [that], then you become a foregone conclusion. There may be elements from "Born Again", but I'm sure there will be elements that are unfamiliar and surprising and different in order for the show to be compelling to fans who know the comics very well." Oleson crafted an original story for the season, taking "pieces of some of my favorite comic book runs, that told a larger story". When pitching his ideas to Marvel, Oleson expected "more pushback" from them, but said "Marvel was incredibly excited about the storyline" and gave him "complete freedom". Executive producer Jeph Loeb did note that despite this apparent freedom, Oleson was still required to deal with Murdock's death in The Defenders which was part of "a fairly good idea as to what [Marvel] wanted to tackle in terms of story" before Oleson presented his ideas. Oleson drew inspiration from "Born Again" and "Guardian Devil" for the tone of the season. Building the season structurally, Oleson felt if any viewer was "a devout Catholic [...] you could read into the events of the early episodes as a message from God to Matt".

At the start of the season, Oleson noted that Murdock would be "broken physically, broken emotionally, and broken spiritually", with his heightened senses failing him. Oleson added, "He's angry at God, he's angry at the fact that he had risked his life to do God's work, and he's questioning whether or not he was a fool." This results in Murdock donning his original black suit, similar to the one he wore in season one, since he "goes to pretty much the darkest place you can" and is at a point, Oleson notes, "[w]hen he realizes that he's incapable of being Daredevil, [and] he would rather just end it than go forward in his life without abilities." This also allowed Oleson to return the character "to the core idea" of being a boxer's son, "where his fighting style was more brutal and kind of close in combat". Oleson also wanted "to make the action sequences matter in ways that reflected on characters, or had real stakes". He added, "the best writing is one where the action sequences are an inherent part of the story and you cannot predict that the action is going to turn out a certain way."

Regarding the return of Wilson Fisk / Kingpin, Oleson called him "smarter, more calculated, and more manipulative", and felt his inclusion allowed the ability to "tell a story that's relevant to the world around us. I looked at the show as a way to examine how tyrants manipulate in order to push their own agenda and cause fear and distrust." Loeb felt the season went "back to the world of the crime story". Karen Page's backstory is further explored in the season, with Woll explaining it reveals "why shooting someone [James Wesley] and covering it up is a bit more in her wheelhouse," while Foggy Nelson's family and additional backstory is also seen. All of the supporting characters in the season were treated "as emotionally real people as opposed to treating them as props or devices". Oleson wanted them to be "the protagonist of their own journey", modeling this approach after the series Breaking Bad, Game of Thrones, The Sopranos, and The Wire.

Benjamin "Dex" Poindexter does not go by Bullseye in the season. In the season's final sequence, Dex's spine is being operated on before the camera zooms into his face and a bullseye appears in his eye. Oleson "was very interested in telling an origin story not only about how a character we know from the comics as a full-blown psychopath and killer, but how somebody in real life could be turned into something like that." This origin also spoke to the overall theme for the season of fear, which touched the story arcs of Murdock, Page, and Fisk as well. Psychiatrists and psychologists were consulted to help create "a realistic portrait of Dex and how he might be able to turn into Bullseye".