No, Dr Who is not owned by Marvel.
Dr Who is a British science fiction television series created by Sydney Newman. It is owned and produced by the BBC (British Broadcasting Corporation).
Marvel, on the other hand, is an American company known for its comic book characters and franchises, including the Avengers, Spider-Man, and X-Men.
While both Dr Who and Marvel are popular in the realm of science fiction and fantasy, they are separate entities with distinct origins and ownership.