Is spider man brand new day part of the marvel cinematic universe?

Quick Answer
Yes, Spider‑Man: Brand New Day is intended to be part of the Marvel Cinematic Universe, scheduled as the 38th MCU film.
Explanation
Spider‑Man: Brand New Day is an upcoming American superhero movie that draws directly from the Marvel Comics character Spider‑Man. The film is produced by Columbia Pictures, Marvel Studios, and Pascal Pictures and will be distributed by Sony Pictures Releasing. According to its official description, it will serve as the 38th entry in the Marvel Cinematic Universe and the fourth film in the MCU Spider‑Man series following Spider‑Man: No Way Home. The story will feature Tom Holland as Peter Parker, who covertly protects New York City while confronting a new threat and dealing with changes to his powers. The project continues the continuity of the MCU’s Spider‑Man character.
Because the film is produced in collaboration with Marvel Studios and is explicitly positioned as the next chapter in the MCU Spider‑Man saga, it is considered part of the Marvel Cinematic Universe. The MCU is a shared narrative framework for films produced by Marvel Studios that features interconnected storylines and characters. As such, any film officially designated as an MCU entry—such as Spider‑Man: Brand New Day—is included within that universe.