Abner Vinícius da Silva Santos (আবনার ভিনিসিয়াস দা সিলভা সান্তোস), known as Abner Vinícius or simply Abner, is a Brazilian professional footballer who plays as a left-back for Ligue 1 club Lyon and the Brazil national team.

Abner began his career playing at youth level for his hometown club Grêmio Desportivo Prudente. He then had a brief spell at Mogi Mirim, before joining Ponte Preta in 2017. He was promoted to the senior team in 2019 and made his professional debut on 16 March 2019, in a Derby Campineiro match against Guarani in the 2019 Campeonato Paulista, which Ponte Preta won 3–0. He scored his first professional goal on 25 May 2019, which was Ponte's third in a 4–2 league win over Paraná.

On 19 July 2019, Abner joined Athletico Paranaense. He made his Série A debut with the club eight days later, coming off the bench in a 2–0 away win over Cruzeiro.

On 15 January 2023, Abner joined Real Betis. The transfer fee paid to Athletico Paranaense was €7 million.

Abner's transfer to Olympique Lyonnais was announced on 5 July 2024. He signed a five-year contract and the transfer fee paid to Real Betis was €8 million.

In 2021, Abner was included on the roster of the Brazil Olympic squad for the Tokyo Olympics. He appeared in one game during the tournament as Brazil won the gold medal.

In October 2024, Abner received his first call up to the Brazil national team for the 2026 FIFA World Cup qualification games against Chile and Peru. He made his debut on 10 October 2024 against Chile, as a starter.