Cristian Westemaier Ribera (born 13 November 2002) is a Brazilian para cross-country skier.

At the 2021 World Para Snow Sports Championships, he won the silver medal in the men's sprint sitting event.

Ribera was born with arthrogryposis multiplex congenita, which causes bent and stiff joints in various parts of the body.

[1] Ribera made his international debut in the World Cup in 2017–18, and came in seventh place in the class for sitting athletes.

At the 2021 World Para Snow Sports Championships held in Lillehammer, Ribera won the silver medal there in second place in the sprint event.