Guilherme Nunes da Silva (born 12 July 1998), known as Guilherme Nunes (Brazilian Portuguese: [giˈʎɛɾmɨ ˈnunɨs]) or simply Guilherme (Brazilian Portuguese: [giˈʎɛɾmɨ]), is a Brazilian footballer who plays as a defensive midfielder for Náutico, on loan from Santos.
Born in Novo Hamburgo, Rio Grande do Sul, Guilherme joined Santos‘ youth setup in 2014, from lowly locals Ivoti/Globalfut. On 5 November 2015, he signed a professional three-year contract with the club.
On 3 February 2018, Guilherme was promoted to the first team by manager Jair Ventura. He made his senior debut fifteen days later, coming on as a late substitute for Jonathan Copete in a 1–0 Campeonato Paulista away win against São Paulo.
Guilherme made his Copa Libertadores debut on 15 March 2018, replacing fellow youth graduate Léo Cittadini in a 3–1 win against Nacional at the Pacaembu Stadium. On 2 May, he renewed his contract until May 2023.
On 18 November 2018, Guilherme made his Série A debut, starting in a 2–1 loss at América Mineiro, only lasting nine minutes on the field and being replaced by Renato due to an injury. He appeared in one further league match in the season, again being subbed off due to injury.
On 9 September 2019, Guilherme was loaned to Série B side Paraná until the end of the 2020 Campeonato Paranaense. In November, after only two unused substitute appearances, his loan was cut short until the end of the year, and he subsequently returned to Peixe.
On 27 February 2020, Guilherme joined Portuguesa on loan for the remainder of the Campeonato Paulista Série A2. He scored his first senior goal on 7 September, netting his team’s second in a 3–2 away loss against XV de Piracicaba.
Upon returning, Guilherme was again only a backup option before moving on loan to Náutico in the second division on 22 June 2021.