The 2010–11 NBL season was the 33rd season of competition since its establishment in 1979. A total of nine teams contested the league. The regular season was played between October 2010 and April 2011, followed by a post-season involving the top four. On 23 February 2010, it was announced that the Sydney Kings would return in 2010–11. The schedule was announced on 27 May 2010.

The Sydney Kings are an Australian men's professional basketball team competing in the National Basketball League (NBL). The team is based in Sydney, New South Wales, and play their home games at Qudos Bank Arena in Sydney Olympic Park. The Kings were formed from a merger between the West Sydney Westars and the Sydney Supersonics in October 1987. The Kings have won five NBL championships in 2003, 2004, 2005, 2022 and 2023. They were the first team to win three consecutive championships in the NBL and currently sit third behind Melbourne United (six) and the Perth Wildcats (ten) for championships won.