|Full name||José Márcio da Costa|
|Date of birth||4 July 1983|
|Place of birth||Mossoró, Brazil|
|Height||1.69 m (5 ft 6 1⁄2 in)|
|2007–2008||→ Marítimo (loan)||30||(7)|
|* Senior club appearances and goals counted for the domestic league only and correct as of 30 November 2019|
His nickname stemmed for his birthplace. He spent most of his professional career in Portugal, representing mainly Braga where he appeared in 175 official matches during five seasons. In 2014 he signed with İstanbul BB from Turkey, where he also endured a lengthy spell.
Born in Mossoró, Rio Grande do Norte, Mossoró began his professional career at Ferroviário Atlético Clube (CE) in 1999, before moving for Santa Catarina Clube and then Paulista Futebol Clube. Shortly after, he broke into the first team, and helped to qualification for the final of the Campeonato Paulista, being defeated by Associação Desportiva São Caetano.
In 2005, Mossoró played a key role for the side as they won the Brazilian Cup. He was then transferred to Sport Club Internacional of Porto Alegre in the second half of the season, making his Série A debuts in the process.
In July 2007, Mossoró was loaned to C.S. Marítimo of Portugal. His performances, which included braces in Primeira Liga wins against Associação Naval 1º de Maio (3–0) and S.C. Braga (4–1) were impressive enough to earn him a permanent €1 million deal with the latter club, which signed the player to a four-year contract at the end of the campaign.
During his first two years at Braga, Mossoró was a very important first-team member when available, helping the Minho side finish in a best-ever runner-up position in 2009–10. Following a 31 October 2009 scuffle at the end of the 2–0 home win against S.L. Benfica – with his team then in the lead – he was also suspended for three games and also suffered a serious injury in the final stretch, with Braga eventually being surpassed in the table by that opponent.
- Craque de Mossoró (Star from Mossoró); Record, 22 April 2008 (in Portuguese)
- Márcio Mossoró deixa o Internacional e vai jogar em Portugal (Márcio Mossoró leaves Internacional and will play in Portugal); Universo Online, 20 July 2007 (in Portuguese)
- Naval-Marítimo, 0–3 (Mossoró 13' e 41', e Anderson 90'+5) (Naval-Marítimo, 0–3 (Mossoró 13' and 41', and Anderson 90'+5)); Record, 13 April 2008 (in Portuguese)
- Marítimo goleia Braga por 4–1 (Marítimo rout Braga 4–1); Rádio e Televisão de Portugal, 20 April 2008 (in Portuguese)
- Braga acerta contratação de Márcio Mossoró (Braga complete signing of Márcio Mossoró); Clic RBS, 2008 (in Portuguese)
- Braga ataca justiça da Liga após castigos a Vandinho e Mossoró (Braga attack League justice following Vandinho and Mossoró bans); Público, 3 February 2010 (in Portuguese)
- Mossoró já foi operado (Mossoró has already undergone surgery); Record, 28 March 2010 (in Portuguese)
- Başakşehir'den 3 bomba birden! (Başakşehir get 3 bombs!); Habertürk, 1 July 2014 (in Turkish)
- "Mossoro resmen Göztepe'de" [Mossoro officially in Göztepe] (in Turkish). NTV Spor. 2 September 2019. Retrieved 2 September 2019.