Mārtiņš Ozoliņš graduated from the Latvian Academy of Music in 1998, from the chorus conducting class of Prof.Edgars Račevskis and in 2003 from the symphony orchestra conducting class of Prof.Imants Resnis. He has taken masterclasses with Helmut Rilling at the Bach Academy in Germany, Gintaras Rinkevicius in Lithuania and Vassily Sinaisky in Saint Petersburg.
A laureate of the international conductors' competition "Riga `97", he has won several international choir competitions since. Most recently and significantly, in 2009, he placed second in the 4th International Jorma Panula Conducting Competition in Vaasa, Finland.
He has enjoyed collaboration with the chamber orchestra Latvian Philharmonics, the Latvian National Symphony Orchestra, the Liepāja Symphony Orchestra and the Lithuanian State Symphony Orchestra.
Since 1999, Mārtiņš Ozoliņš has been a conductor with the Latvian National Opera, where his repertoire includes Verdi's Nabucco, Tchaikovsky's Eugene Onegin and The Queen of Spades, Wagner's Der fliegende Holländer, Shostakovich's Lady Macbeth of Mtsensk, Dvořák's Rusalka, Bizet's Carmen, Rubinstein's The Demon, as well as ballets such as Tchaikovsky's The Nutcracker and Swan Lake, Prokofiev's Romeo and Juliet, Maskat's Les Liaisons dangereuses and Khodosko's Cinderella.
With the Opera, Mārtiņš Ozoliņš has toured to Moscow, Mexico, Tamper (Finland), Trieste (Italy), Catania (Sicily).
Since 2010, he is also the director of the Faculty of Conducting at the Jāzeps Vītols Latvian Music Academy.
Since January 2011 – artistic director and head conductor of the Professional Brass Band "Riga".
On March 21, 2013, Mārtiņš Ozoliņš received the Riga City Council Department of Education, Culture and Sports yearly award "The White Sparrow" in the nomination "Employee of a Riga City Cultural Establishment" for his work in the preparation of the 40th anniversary concerts of the Professional Brass Band "Riga".
During the XXV Latvian Song and XV Dance Festival of 2013, Mārtiņš Ozoliņš debuted as a master-conductor of the choir.