Robert Ayrton Piris Da Motta Mendoza (born 26 July 1994) is a Paraguayan professional footballer who plays as a defensive midfielder for Cerro Porteño and the Paraguay national team.

On 10 January 2017 Piris Da Motta left Paraguayan side Rubio Ñú to join Argentine club San Lorenzo in a US$750,000 transfer.

[4][5] On 1 August 2018 Piris Da Motta arrived in Rio de Janeiro to sign a four-year contract with Flamengo in a €2.5m transfer from San Lorenzo.

[10] On 7 September 2020 Flamengo announced the transfer of Piris Da Motta on a one year loan deal to Süper Lig club Gençlerbirliği S.K.

[11] Despite the club's poor performance being relegated at the end of the season Piris Da Motta had a strong year with 36 appearances and 6 goals scored.