Lukas Uleckas (born 6 August 1999) is a Lithuanian professional basketball player for Juventus Utena of the Lithuanian Basketball League (LKL). Uleckas has competed with the Lithuanian junior national teams on multiple occasions.
Uleckas began his career in 2015, playing for Sabonis Basketball Center of the RKL. In July 2016, he signed a long-term deal with à ½algiris Kaunas. He then joined à ½algiris-2 Kaunas of the NKL, where he played for three seasons.
Uleckas made his professional debut with à ½algiris' senior team on 14 October 2018, in an LKL regular season home game against BC Neptà «nas. For the 2019âÂÂ20 season, he was loaned to CBet Prienai.
On 5 July 2020, Uleckas signed a three-year contract with Rytas Vilnius. On 19 June 2024, Uleckas parted ways with the club after four seasons, having won the LKL championship twice in 2022 and 2024.
On 9 July 2024, Uleckas signed with à  iauliai of the Lithuanian Basketball League (LKL).
On August 9, 2025, he signed with Juventus Utena of the Lithuanian Basketball League (LKL).