Marius Grigonis (born 26 April 1994) is a Lithuanian professional basketball player for Panathinaikos of the Greek Basketball League and the EuroLeague. Standing at a height of , he plays at the shooting guard and small forward positions.
Before starting his professional career, Grigonis played in the NKL with the à ½algiris-Arvydas Sabonis school for four seasons. He was an important contributor to the team during his debut season, and established himself as a leader by his third season. He won bronze medals during his last two seasons with the Sabonis school team.
On 15 May 2013, Grigonis was brought into the main à ½algiris roster for a game against BC Nizhny Novgorod in the VTB United League.
For the 2013âÂÂ14 season, Grigonis was loaned to the Spanish second division team Peñas Huesca. He was included in the All-LEB Oro team.
On 14 August 2014, Grigonis signed a two-year deal with Bàsquet Manresa of the Liga ACB. After spending two seasons with Manresa, he signed a "2+1" deal with Iberostar Tenerife on 28 July 2016. He was named the Final Four MVP of the Basketball Champions League 2016âÂÂ17 season. On 13 July 2017, Grigonis parted ways with Tenerife.
On 13 July 2017, he signed a three-year deal with German club Alba Berlin.
On 3 July 2018, Grigonis returned to à ½algiris Kaunas when he signed a three-year contract. His season was cut short due to an injury in November 2019. Grigonis averaged 11.5 points, 2.6 rebounds and 2.0 assists per game in the first 10 games of the 2019âÂÂ20 season. On 8 July 2020, he re-signed with the team.
On 12 June 2021, Grigonis signed a three-year contract with VTB United League champions and EuroLeague mainstays CSKA Moscow. He averaged 8.5 points, 1.4 rebounds and 1.9 assists per game during his first season the Russian powerhouse.
On 28 February 2022, upon the outbreak of the 2022 Russian invasion of Ukraine, he departed the club. The team accused him of violating his contract.
On 14 July 2022, Grigonis signed a two-year contract with Panathinaikos of the Greek Basket League and the EuroLeague, after a settlement agreement between the Greek club and CSKA Moscow was reached.
Grigonis received an improved role in the team rotation during his second season, under the supervision of new head coach Ergin Ataman. On 8 April 2024, Grigonis agreed upon a three-year contract extension that would keep him with the Greek powerhouse through 2027. On July 11 of the same year, the deal was made official.
In the 2024âÂÂ25 season, Marius Grigonis was sidelined for an extended period due to a serious back injury. He last played for Panathinaikos AKTOR Athens on October 17, 2024, during a EuroLeague Round 4 game against Real Madrid, where he was on the court for only 2 minutes and 24 seconds before exiting due to back pain.
Initially, Grigonis was expected to miss 4 to 6 weeks of action. However, his recovery was slower than anticipated, leading to a decision to undergo surgery. The surgery was performed on December 11, 2024, in Athens. Despite the procedure and ongoing rehabilitation efforts, Grigonis's back issues persisted, preventing him from returning to the court for the remainder of the season.
In the 2025âÂÂ26 season, Grigonis made his return to the court on September 30, 2025, after 344 days out, playing 8 minutes in Panathinaikosâ 87âÂÂ79 EuroLeague season opener victory over Bayern Munich. Upon entering the game, he received an enthusiastic ovation from the fans.
Grigonis represented Lithuania in the UâÂÂ16, UâÂÂ18, UâÂÂ19 and UâÂÂ20 youth tournaments. He led his team to two silver medals and a bronze medal while participating in four tournaments. During the 2012 FIBA Europe Under-18 Championship semifinal game, he scored the winning shot against Serbia. As a result of his contributions to the team's success, he was chosen to be included in the AllâÂÂTournament Team. In 2014, coach Jonas Kazlauskas included Grigonis in the preliminary 24âÂÂplayer candidate list for the senior national basketball team. Though, he was invited to the national team training camp for the first time only in 2016 and immediately qualified into the Olympic roster.
|- | style="text-align:left;"| 2018âÂÂ19 | style="text-align:left;" rowspan="3"| à ½algiris | 34 || 18 || 20.8 || .466 || .442 || .935 || 2.1 || 1.9 || .6 || || 8.7 || 9.3 |- | style="text-align:left;"| 2019âÂÂ20 | 10 || 10 || 25.7 || .447 || .386 || .846 || 2.6 || 2.0 || .5 || .1 || 11.5 || 11 |- | style="text-align:left;"| 2020âÂÂ21 | 34 || 34 || 27.6 || .481 || .456 || .944 || 2.1 || 3.3 || .8 || .1 || 13.4 || 13.7 |- | style="text-align:left;"| 2021âÂÂ22 | style="text-align:left;"| CSKA Moscow | 16 || 3 || 19.4 || .424 || .431 || .917 || 1.4 || 1.9 || .6 || || 8.5 || 7.4 |- | style="text-align:left;"| 2022âÂÂ23 | style="text-align:left;" rowspan="3"| Panathinaikos | 27 || 7 || 17.9 || .435 || .435 || .840 || 1.6 || 1.6 || .4 || || 8.1 || 7.6 |- | style="text-align:left;background:#AFE6BA;"| 2023âÂÂ24â | style="background:#CFECEC;"|41* || 36 || 24.7 || .483 || .417 || .900 || 2.7 || 1.3 || .6 || || 9.1 || 8.7 |- | style="text-align:left;background:#FFB5C0"| 2024âÂÂ25 | 4 || 2 || 22.9 || .333 || .250 || 1.000 || 0.8 || 1.0 || .0 || .3 || 3.0 || 2.8 |- class="sortbottom" | style="text-align:center;" colspan="2"| Career | 166 || 110 || 22.4 || .463 || .430 || .906 || 2.1 || 2.0 || .6 || .0 || 9.7 || 9.6
|- | style="text-align:left;"| 2017âÂÂ18 | style="text-align:left;"| Alba Berlin | 16 || 8 || 25.1 || .449 || .475 || .897 || 3.1 || 2.6 || .9 || || 11.6 || 13.5 |- class="sortbottom" | style="text-align:center;" colspan="2"| Career | 16 || 8 || 25.1 || .449 || .475 || .897 || 3.1 || 2.6 || .9 || || 11.6 || 13.5
|- | style="text-align:left;background:#AFE6BA;"| 2016âÂÂ17â | style="text-align:left;"| Canarias | 14 || 10 || 20.0 || .460 || .347 || .825 || 2.1 || 2.0 || .6 || .1 || 9.3 |- class="sortbottom" | style="text-align:center;" colspan="2"| Career | 14 || 10 || 20.0 || .460 || .347 || .825 || 2.1 || 2.0 || .6 || .1 || 9.3