|Full name||Marcelo dos Santos Ferreira|
|Date of birth||27 July 1989|
|Place of birth||São Carlos, Brazil|
|Height||1.82 m (5 ft 11 1⁄2 in)|
|Playing position||Centre back|
|2011–2012||→ Leixões (loan)||20||(0)|
|* Senior club appearances and goals counted for the domestic league only and correct as of 20 April 2019|
Marcelo moved to Portugal in 2010, signing with G.D. Ribeirão in the third division. For the 2011–12 season he went straight to the Primeira Liga with Rio Ave FC, being immediately loaned to Leixões SC.
Marcelo made his debut in the Portuguese top flight on 18 August 2012, playing the full 90 minutes in a 0–1 home loss against C.S. Marítimo. At the end of the campaign, in which he started in all his 28 appearances (scoring in a 1–0 win at Gil Vicente F.C. on 13 January 2013) to help his team finish in sixth position, he won the club's Player of the Year award.
On 23 May 2018, Marcelo joined Sporting Clube de Portugal on a free transfer and a three-year contract. On 27 December, however, after only one appearance in the Taça de Portugal and another in the Taça da Liga to his credit, he moved to the Major League Soccer with Chicago Fire Soccer Club for a reported €500,000 fee.
- Sporting CP
- "Feliz e Marcelo são reforços oficiais para 2011/2012" [Feliz and Marcelo are official additions for 2011/2012] (in Portuguese). Rio Ave F.C. 2011. Retrieved 19 May 2014.
- "Jean Sony cedido ao Rio Ave em troca de Tiago Costa, Marcelo e Rafinha" [Jean Sony loaned to Rio Ave in exchange for Tiago Costa, Marcelo and Rafinha] (in Portuguese). SAPO. 31 August 2011. Retrieved 22 February 2018.
- "Marítimo vence em Vila do Conde" [Marítimo win in Vila do Conde]. O Jogo (in Portuguese). 18 August 2012. Retrieved 22 February 2018.
- "Gil Vicente-Rio Ave, 0–1: Vitória sem gravata mas feita à medida" [Gil Vicente-Rio Ave, 0–1: No-tie win but handmade]. Record (in Portuguese). 13 January 2013. Retrieved 3 November 2015.
- "Gala do 74.º aniversário: Sucesso verde e branco" [74th anniversary gala: Green and white success] (in Portuguese). Rio Ave F.C. 10 May 2013. Retrieved 22 February 2018.
- "Sporting confirma a contratação de Marcelo" [Sporting confirm signing of Marcelo]. Record (in Portuguese). 23 May 2018. Retrieved 24 May 2018.
- Devesas, Lino (27 December 2018). "Marcelo rescindiu contrato com o Sporting" [Marcelo terminated contract with Sporting]. O Jogo (in Portuguese). Retrieved 27 December 2018.
- "Chicago Fire acquire Brazilian center back Marcelo from Sporting CP". Major League Soccer. 27 December 2018. Retrieved 27 December 2018.