WandaVision is an American television miniseries created by Jac Schaeffer for the streaming service Disney+, based on Marvel Comics featuring the characters Wanda Maximoff / Scarlet Witch and Vision. It is the first television series in the Marvel Cinematic Universe (MCU) produced by Marvel Studios, sharing continuity with the films of the franchise, and is set after the events of the film Avengers: Endgame (2019). It follows Wanda Maximoff and Vision as they live an idyllic suburban life in the town of Westview, New Jersey, until their reality starts moving through different decades of sitcom homages and television tropes. Schaeffer served as head writer for the series, which was directed by Matt Shakman.

Elizabeth Olsen and Paul Bettany reprise their respective roles as Wanda and Vision from the film series, with Debra Jo Rupp, Fred Melamed, Kathryn Hahn, Teyonah Parris, Randall Park, Kat Dennings, and Evan Peters also starring. By September 2018, Marvel Studios was developing a number of limited series for Disney+ centered on supporting characters from the MCU films such as Wanda and Vision, with Olsen and Bettany returning. Schaeffer was hired in January 2019, with the series officially announced that April, and Shakman joining in August. The production used era-appropriate sets, costumes, and effects to recreate the different sitcom styles that the series pays homage to. Filming began in Atlanta, Georgia, in November 2019, before production halted in March 2020 due to the COVID-19 pandemic. Production resumed in Los Angeles in September 2020 and wrapped that November.

WandaVision premiered with its first two episodes on January 15, 2021, and ran for nine episodes, concluding on March 5. It is the first series, and the beginning, of Phase Four of the MCU. The series received praise from critics for its homages to past sitcoms and for the performances of its cast, especially those of Olsen, Bettany, and Hahn, though there was criticism for the finale. It was widely discussed and analyzed by fans based on various popular theories, as well as by commentators for its exploration of grief and nostalgia. The series received numerous accolades, including 23 Primetime Emmy Award nominations, winning three. Olsen reprised her role in the film Doctor Strange in the Multiverse of Madness (2022), which continues Wanda's story from WandaVision, while the spin-off series Agatha All Along premiered in September 2024 and focuses on Hahn's Agatha Harkness. Another spin-off focusing on Bettany's Vision, Vision Quest, is scheduled to be released in 2026.