Daniel Sousa, a recurring character on Agent Carter, returns in Agents Of S.H.I.E.L.D. Season 7.

The Watchdogs use nitramene bombs, created by Howard Stark and used by Leviathan.

Modern Hydra uses “The Faustus Method”, created by Dr. Viktor Ivchenko / Johan Fenhoff.

Michael Carter, Harrison Carter, and Amanda Carter are listed as Peggy's family members in the obituary that Coulson reads in Agents Of S.H.I.E.L.D. Season 3.

Isodyne Energy from Agent Carter is mentioned in Agents Of S.H.I.E.L.D. Season 4. It is revealed that the Roxxon Corporation acquired the laboratory.

Hugh Jones, Isodyne Energy, the Council of Nine, and Auerbach Theatrical Agency are mentioned in Agents Of S.H.I.E.L.D. Season 7.

Edwin Jarvis, Ana Jarvis, and Howard Stark's Estate are mentioned in the book A History of S.H.I.E.L.D., as shown in Agents Of S.H.I.E.L.D. Season 7. Archive footage from Agent Carter episodes is also used in the episode.

Roger Dooley is mentioned in Agents Of S.H.I.E.L.D. Season 7.

In Agents Of S.H.I.E.L.D. Season 5, Yo-Yo tells Coulson that she always thought there were "people hiding on the Moon".

Nathan Bowen, Tandy Bowen / Dagger's father, is mentioned as a target of Project Insight in Agents Of S.H.I.E.L.D. Season 7.