Renaldas Seibutis (born July 23, 1985) is a Lithuanian former professional basketball player.

On 12 June 2011, Seibutis signed a three-year (2+1) contract with the Lithuanian team Lietuvos rytas.

[2] On 4 September 2015, Seibutis signed a one-year contract (with an option for another) with the Lithuanian club Žalgiris Kaunas.

[5] On 11 August 2021, Seibutis officially announced his retirement from professional basketball, after having played his last game in 2019.

[12] At the 2010 FIBA World Championship Seibutis played for the Lithuanian national basketball team, which won bronze medals.