Martin Hermannsson (born 16 September 1994) is an Icelandic professional basketball player for Alba Berlin of the German Basketball Bundesliga (BBL) and the FIBA Champions League. He also internationally represents the Icelandic national basketball team, with which he participated in the EuroBasket 2015, EuroBasket 2017 and EuroBasket 2025. In 2019, Martin was named the Icelandic Men's Basketball Player of the Year for the fourth year in a row.
Martin started his senior team career with KR at the age of 15. With KR, he went on to win the Icelandic championship twice, in 2011 and 2014. In 2014 he was named the Domestic Player of the Year, the Playoffs MVP and the Young Player of the Year while also being selected to the Domestic All-First Team.
On 17 May 2017, he was selected for the LNB Pro B All-First Team and was the runner-up to the Most Valuable Player award. He switched to Champagne Châlons-Reims Basket of the LNB Pro A for the 2017âÂÂ18 season.
On 29 June 2018, Martin signed with Alba Berlin of the Basketball Bundesliga. On 7 November, he injured his ankle in Alba's 106âÂÂ101 victory against Tofaà  in the EuroCup and was expected to miss 6 weeks. He returned from injury on 27 December, scoring a game high 19 points in only 20 minutes, in Alba's 108âÂÂ96 victory against Giessen 46ers. On 22 January 2019, Martin scored 17 straight points in the third quarter in against Rytas Vilnius in the EuroCup, helping Alba cut the lead from 21 points to 4 points. He scored 20 of his 25 points in the second half, including three free throws with 0.9 seconds remaining that gave Alba an 87âÂÂ85 victory. On 17 February, he had 6 points and 6 assists in Alba's narrow 82âÂÂ83 loss against Brose Bamberg in the German Basketball Cup Finals. In June 2019, Martin and Alba lost to Bayern Munich in the Bundesliga finals 0âÂÂ3.
In December 2019, Martin was named the Icelandic Men's Basketball Player of the Year for the fourth straight season. He finished second in the vote for the Icelandic Sportsperson of the Year. On 17 January 2020, he scored 6 of his 13 points in overtime in a victory against Red Star Belgrade. On 17 February 2020, he led all scorers with 20 points in Alba's 89âÂÂ67 victory against EWE Baskets Oldenburg in the German Basketball Cup finals. On 28 June 2020, Martin won the Basketball Bundesliga championship with Alba Berlin.
On 9 July 2020 Martin signed with Valencia of the Spanish Liga ACB.
On 16 December 2020, Martin was named the Icelandic Male Basketball Player of the Year for the fifth straight year.
On 30 May 2022, Martin tore his ACL in a Liga ACB playoffs match against Saski Baskonia.
On 1 July 2022, Martin renewed his contract with Valencia for an additional two seasons.
On 10 January 2024, Martin returned to Alba Berlin after four years.
|- | style="text-align:left;"| 2019âÂÂ20 | style="text-align:left;"| Alba Berlin | 27 || 20 || 25.7 || .410 || .337 || .860 || 1.6 || 4.8 || .5 || .0 || 10.9 || 8.5 |- | style="text-align:left;"| 2020âÂÂ21 | style="text-align:left;" rowspan="2"| Valencia | 29 || 0 || 17.7 || .435 || .383 || .870 || 1.5 || 3.4 || .5 || .0 || 6.9 || 7.8 |- | style="text-align:left;"| 2022âÂÂ23 | 4 || 0 || 6.8 || .429 || .250 || || || 1.3 || .5 || .3 || 1.8 || 2.0 |- | style="text-align:left;" rowspan="2"| 2023âÂÂ24 | style="text-align:left;"| Valencia | 4 || 0 || 10.0 || .556 || .000 || 1.000 || .8 || 1.8 || || || 3.0 || 2.3 |- | style="text-align:left;"| Alba Berlin | 12 || 10 || 20.3 || .403 || .348 || 1.000 || 1.5 || 4.2 || .8 || .2 || 7.2 || 7.3 |- class="sortbottom" | style="text-align:center;" colspan="2"| Career | 76 || 30 || 20.0 || .419 || .344 || .885 || 1.4 || 3.8 || .5 || .1 || 7.9 || 7.4
|- | style="text-align:left;"| 2018âÂÂ19 | style="text-align:left;"| Alba Berlin | 20 || 17 || 25.5 || .476 || .414 || .855 || 1.7 || 4.7 || .9 || || 12.7 || 12.8 |- | style="text-align:left;"| 2021âÂÂ22 | style="text-align:left;"| Valencia | 20 || 17 || 22.2 || .463 || .439 || .960 || 1.0 || 5.3 || .7 || .1 || 8.7 || 9.8 |- class="sortbottom" | style="text-align:center;" colspan="2"| Career | 40 || 34 || 23.8 || .470 || .425 || .888 || 1.4 || 5.0 || .8 || .0 || 10.7 || 11.3