The fictional timeline of the Marvel Cinematic Universe (MCU) media franchise and shared universe is the continuity of events for several feature films, television series, television specials, short films, and the I Am Groot shorts, which are produced by Marvel Studios, and the group of Netflix series produced by Marvel Television.
While the early films of Phase One and Phase Two of the franchise followed each other in the timeline similar to their release order, Phase Three saw many of the films overlapping with each other in the timeline, while also introducing the first prequel property, Captain Marvel (2019). The Phase Three film Avengers: Endgame (2019) featured characters traveling into the past and introduced a five-year time jump, with many subsequent releases in Phase Four and Phase Five set after Endgame's events in the timeline. The television series Loki and What If...? were the first properties to occur outside of the main timeline and explore alternative timelines and universes.
There have been numerous attempts by Marvel Studios and others to codify the events of the MCU, which have been subject to perceived continuity errors, resulting in Marvel Studios releasing an official timeline book in 2023 for their first four phases that were designated as part of their "Sacred Timeline". This book did not feature projects produced by other companies, such as Marvel Television's series which all had been loosely connected to the films, though it was noted all of these outside projects were part of the larger Marvel canon. In early 2024, Marvel Studios formally integrated Marvel Television's group of Netflix series into their Disney+ timeline.
As of the Phase Five film The Marvels (2023) and the television series Agatha All Along (2024), the "present day" in the MCU is 2026. The following covers and discusses MCU media released by Marvel Studios and the Netflix series by Marvel Television.