Vinicius Moreira Castro (born February 28, 1989) is a Brazilian mixed martial artist currently competing in the Light heavyweight division. He is most known for his time spent fighting in the Ultimate Fighting Championship (UFC).

Inspired by Minotauro Nogueira's fights in Pride FC, Moreira started training jiu-jitsu in 2006 as his first martial art. After growing unmotivated by jiu-jitsu, he started training mixed martial arts in 2015, making his professional debut in the following year.

Moreira began his MMA career by compiling an MMA record of 8–1 by competing mainly within the Brazilian regional MMA circuit as well as in India for Super Fight League.

Moreira faced John Allan on August 11, 2018, at Dana White's Contender Series Brazil 3. He won the fight via submission with a triangle choke and was awarded with a UFC contract.

Moreira made his UFC debut against Alonzo Menifield on January 19, 2019, at UFC Fight Night: Cejudo vs. Dillashaw. He lost the fight via technical knockout due to punches in the first round.

Moreira then faced Eryk Anders on June 29, 2019, at UFC on ESPN: Ngannou vs. dos Santos. He lost the fight via knockout due to punches in the first round.

Moreira next faced Paul Craig on September 21, 2019, at UFC Fight Night: Rodríguez vs. Stephens. He lost the fight via submission with a rear-naked choke in the first round.

Moreira was scheduled to face Tyson Pedro on February 23, 2020, at UFC Fight Night: Felder vs. Hooker. However, Pedro withdrew from the bout in early January due to an undisclosed injury.