- Jack Murdock's last fight was against Carl "The Crusher" Creel, who appeared in Season 2 of Agents of S.H.I.E.L.D. as the Absorbing Man.
- A headline referencing Cybertek, the company that built Deathlok in Agents of S.H.I.E.L.D., can be seen at the New York Bulletin.
- The show sees Hell's Kitchen struggling to rebuild after being wrecked during the incident.
- A Rand Corporation truck could be seen in set photos, although the logo on the truck isn't visible in the show.
- James Wesley lectures the Ranskahov brothers by saying their injuries would make more sense if Daredevil had an iron suit or a magic hammer.
- Avengers Tower can be seen in the background of one of the motion posters.
- Owlsley mentions that Wilson Fisk's latest movements are possible because of all the new heroes stealing attention away from lower level crime.
- A newspaper clipping framed in Ben Urich's office shows a story he wrote about the fight in Harlem between the Hulk and the Abomination in The Incredible Hulk.
- Foggy says "I could call myself Captain America; it doesn't put wings on my head."
- Matt and Foggy ended up walking away from their old firm over a case involving the Roxxon Oil Corporation: A fictional mega-corporation used throughout the various Marvel Universes as a Bland-Name Product stand-in for real-world oil/energy companies (usually part of some scandal Ripped from the Headlines). The company has previously been seen and/or mentioned in Iron Man, Iron Man 2, Iron Man 3, Agents of S.H.I.E.L.D. and Agent Carter.
- When training young Matt, Stick calls his abilities "gifts"; the same terminology Agents of S.H.I.E.L.D. used for superpowers. (Though Agents later alternates between using "gifted" and "enhanced" just before Daredevil premiered.)
- Foggy mentions that he and Matt are trying to get an ex-con's kids into St. Agnes Daycare, which is related to the St. Agnes Orphanage that Daisy Johnson was sent to as a baby.
- Owlsley notes that the location for Wilson Fisk's gala is owned by a rich eccentric named Van Lunt, who is obsessed with astrology. In the comics, Cornelius van Lunt, a.k.a. Taurus, is the backer of a Legion of Doom consisting of Zodiac-themed villains. The Van Lunt name can also be seen on the frosted entry door to the Nelson & Murdock office behind the temporary sign in season 1.
- The Dogs of Hell biker gang appears in the second episode of season two. They previously showed up on the Agents of S.H.I.E.L.D. episode Yes Men.
- In season 2, issues can be seen in the New York Bulletin offices that read "Stark Tower Ruined in Battle of NY" and "Cybertek Settles".
- A common criticism of season 1 of Jessica Jones (2015) was that it seemed to operate in a separate vacuum from Daredevil, with only a few minor crossovers and references (like Brett being among the cops controlled by Kilgrave, or Claire Temple's appearance). The writing staff seemed to take the hint, and as a result, season 2 of Daredevil makes several references to Jessica Jones to establish that yes, both shows take place in the same universe.
- In "Dogs to a Gunfight", Brett says that the late Detective Oscar Clemons always said "Gotta treat witnesses like mushrooms. Feed 'em shit. Keep 'em in the dark."
- Claire has been given a crappy shift at Metro-General's emergency room for removing Luke Cage from the hospital.
- Marci Stahl has been hired by Hogarth, Chao & Benowitz.
- Marci mentions that Jessica Jones is one of the vigilante-type people that Reyes intends to build a case against after convicting Frank Castle.
- Jeri Hogarth appears in the season 2 finale to give a job offer to Foggy.
- Samantha Reyes made her debut in the season 1 finale of Jessica Jones.
- Though most of the references to The Defenders in season 3 is about the Midland Circle crisis (since Matt was believed to have died in that event), one reference to the Defenders themselves is made: in the last episode, when discussing Karen being an investigator for the new business that the main trio decides to open together, Matt notes that she's much more stable than Jessica Jones.
Continuity Nod / Daredevil (2015)