Arthur Nabarrete Zanetti (born April 16, 1990) is a Brazilian artistic gymnast. He won the gold medal on rings exercise at the 2012 Summer Olympics in London and at the 2013 World Artistic Gymnastics Championships in Antwerp.
Zanetti is a rings exercise specialist. He occasionally competes in floor and vault exercises. He originated one skill, which is named after him in the Code of Points since 2013.
Zanetti competed in 2009 World Artistic Gymnastics Championships in London. He qualified in 8th for Rings Final and placed 4th during Event Finals, scoring 15.325. This was his best result that year.
Zanetti won the gold medal on Rings at the 2011 Summer Universiade, in Shenzhen, China, with a score of 15.600. It was the first medal of Brazil's male artistic gymnastics in this competition.
In Tokyo, Japan, he won the silver medal on rings at the 2011 World Artistic Gymnastics Championships. His score was 15.600, finishing behind the champion, Chen Yibing. With this result, Zanetti qualified to compete at the 2012 Summer Olympics. He was also the first Brazilian to win a medal on rings in a World Gymnastics Championships.
At the 2011 Pan American Games, Zanetti won the silver medal on rings. He also won the team title, the first male team gold medal of Brazil in Pan American Games.