Marius Valinskas (born 4 May 1999) is a Lithuanian professional basketball player for à  iauliai of the Lithuanian Basketball League (LKL). Standing at , he plays both guard positions.
Prior to his professional career, Valinskas played for Kaunas-based Sabonis Basketball Center team, which played in the third-tier RKL. In 2016, he moved to BC à ½algiris-2 of the NKL, where he played for three seasons.
On 30 April 2019, Valinskas was loaned to Lietkabelis PanevÃÂà ¾ys of the Lithuanian Basketball League (LKL) until the end of the 2018âÂÂ2019 season. On 21 June 2019, he signed a long-term contract with Lietkabelis. On 23 July 2021, he was released by the club.
On 6 August 2022, Valinskas signed a two-year contract with NevÃÂà ¾is KÃÂdainiai of the Lithuanian Basketball League (LKL). On 21 June 2023, Valinskas signed a one-year deal with Juventus Utena.
On 19 July 2024, Valinskas signed a two-year (1+1) contract with à  iauliai of the Lithuanian Basketball League (LKL).
Valinskas' older brother, Paulius, is also a professional basketball player who has previously played for à ½algiris Kaunas, as well as internationally in Belgium and Serbia.