Celestino Vietti Ramus (born 13 October 2001) is an Italian motorcycle rider competing in Moto2 for Red Bull KTM Ajo.

In 2018 he competed full-time in the 2018 FIM CEV Moto3 Junior World Championship, scoring a second place in Barcelona and finishing the season 10th overall, with 52 points.

Following his impressive debut performances, Vietti competed full-time in the 2019 Moto3 World Championship, with Bulega moving up to the Moto2 category.

Following Nicolò Bulega's performances, Vietti was promoted to Moto2 for the 2021 season, partnering Marco Bezzecchi at Sky Racing Team VR46.

He finished the season with 89 points, good for 12th in the final standings, and third among rookies, behind Raúl Fernández, and Ai Ogura.