Deividas Gailius ( Daunys; April 26, 1988) is a Lithuanian professional basketball player and team captain for BC Gargà ¾dai of the Lithuanian Basketball League (LKL). Standing at , he plays the small forward and shooting guard positions.
During the 2012âÂÂ13 season with Neptà «nas KlaipÃÂda, Gailius averaged a career high of 17.0 points, 5.6 rebounds and 2.1 assists per game in the Lithuanian League. For the 2013âÂÂ14 season he played with the Slovenian team Union Olimpija Ljubljana. In 16 EuroCup games played, Gailius averaged 16.1 points, 5.1 rebounds and 1.8 assists per game. In August 2014, he returned to Neptà «nas, signing a one-year deal. In June 2015, he signed a two-year deal with Lietuvos rytas Vilnius. The seasons with Rytas were two of the worst in club history, finishing in only 3rd place in the Lithuanian championship, though in 2017, Gailius sealed the win against his former club Neptà «nas. In August 2017, he signed a one-year deal with San Pablo Burgos of the Liga ACB.
Gailius spent the 2019âÂÂ20 season with Neptà «nas, averaging 16.6 points and 2.9 assists per game. On September 1, 2020, he signed with Baskets Bonn of the Basketball Bundesliga. In 19 games played for the German side, Gailius averaged 11.1 points, 2.9 rebounds and 1.5 assists per game.
On March 28, 2021, Gailius signed with Neptà «nas to return one more time to the club.
On August 15, 2025, he signed with BC Gargà ¾dai of the Lithuanian Basketball League.
Gailius played for Lithuania national team at the 2007 FIBA U-19 World Championship, finishing in 9th place. In 2014 coach Jonas Kazlauskas included Gailius in the preliminary 24-player list for the main Lithuania national basketball team. However, he did not make it into the final roster. In 2015 he was included in the extended candidates list once again. This time, he qualified into the main EuroBasket 2015 roster and won a silver medal. He was invited to the national team training camp in 2016 as well, but was released on July 14.
|- | style="text-align:left;"| 2014âÂÂ15 | style="text-align:left;"| Neptà «nas | 10 || 10 || 26.9 || .470 || .407 || .600 || 4.8 || 2.5 || 1.3 || .0 || 14.7 || 13.9 |- class="sortbottom" | style="text-align:center;" colspan=2 | Career | 10 || 10 || 26.9 || .470 || .407 || .600 || 4.8 || 2.5 || 1.3 || .0 || 14.7 || 13.9
In the summer of 2007, Gailius changed his surname from Daunys.