Ronald Odair de Oliveira Julião (born 16 June 1985) is a Brazilian track and field athlete who competes in the shot put and discus throw.

Born in Caieiras in Brazil's Sao Paulo state, Ronald Julião attended Sebastião de Oliveira Gusmão school and began training in the shot put from the age of thirteen.

[3] He came sixth in the shot at the 2003 South American Junior Championships in Athletics, but showed progression in the discus by taking second place with a throw of 56.36 m.[4] He signed up with the BM&F Bovespa club in 2005 and began to establish himself in the senior ranks that year.

[8] Julião threw a shot put best of 18.19 m to take the silver medal at the 2009 South American Championships in Athletics – a performance that was better than that in his principal event, as he came third in the discus.

[14] Clearing sixty metres in the discus for the first time, he opened the year with a Brazilian record of 60.40 m, beating José Araujo de Souza's mark which has stood since 1990.

He broke the outdoor national record in the shot put with a throw of 18.78 m (coming ninth) and improved his discus mark to 63.30 m to leave the competition with the bronze medal.

[17] Julião threw 65.41 m at the Grande Premio Brasil Caixa de Atletismo in May 2012, lifting him into second place on the all-time South American discus rankings behind Jorge Balliengo.