Honoured Artist of Russia, Prize-winner at the I International Irina Arkhipova Television Young Opera Singers' Competition, which marked the 850th anniversary of the founding of Moscow (Moscow, 1997, Grand-prix), Prize-winner at the International Glinka Vocalists' Competition (Ufa, 1995, 1st prize), Prize-winner at the International Rimsky-Korsakov Young Opera Singers' Competition (St Petersburg, 1994 Hope diploma and 1996 Grand-prix), Honored Artist of Russia.

Olga Trifonova was born in Leningrad. Graduated from the St Petersburg State Rimsky-Korsakov Conservatoire in 1998 (class of Professor Gagen). Made her Mariinsky Theatre debut in 1994 as Barbarina (Le nozze di Figaro).

Repertoire at the Mariinsky Theatre includes: Antonida (A Life for the Tsar), Lyudmila (Ruslan and Lyudmila), Xenia (Boris Godunov), Prilepa (The Queen of Spades), Snegurochka (The Snow Maiden), Volkhova (Sadko), Marfa (The Tsar's Bride), Oxana (Christmas Eve), Swan Princess (The Tale of Tsar Saltan), Sirin (The Legend of the Invisible City of Kitezh and the Maiden Fevronia), Queen of Shemakha (The Golden Cockerel), Nightingale (Le rossignol), Luisa (Betrothal in a Monastery), Rosina (Il barbiere di Siviglia), Lucia (Lucia di Lammermoor), Amina (La sonnambula), Gilda (Rigoletto), Oscar (Un ballo in maschera), Heavenly Voice (Don Carlo), Nannetta (Falstaff), Musetta (La boheme), Lauretta (Gianni Schicchi),
Barbarina (Le nozze di Figaro), Klingsor's Flower Maiden (Parsifal).
Olga Trifonova's repertoire also includes Gilda (Rigoletto), Amina (La sonnambula), Elvira (I puritani) and Norina (Don Pasquale).

Olga Trifonova has appeared at the world's leading opera venues. In 1998 she made her Salzburg Festival debut as Klingsor's Flower Maiden (Parsifal), in 1999 she performed as Prilepa (The Queen of Spades) at the Metropolitan Opera, and in 2000 she sang as Oscar (Un ballo in maschera) at the Opera di Parma and as Fiakermilli at the Theatre du Chatelet (Paris). Other roles Olga Trifonova has performed throughout the world include Marfa (The Tsar's Bride; 2003, Bordeaux Theatre), Gilda (Rigoletto; 2005, Welsh National Opera), Nanetta (Falstaff; 2006-2007, Washington Opera) and Musetta (La boheme; 2007, Baden-Baden).

In summer 2003 Olga Trifonova took part in a production of the opera The Tsar's Bride at the Theatre du Chatelet (directed by T. Chkheidze).

With the Mariinsky Opera Company, Olga Trifonova has toured to Finland, Germany, Israel, the USA, Belgium, Japan, France, Slovenia, Italy, Turkey, Switzerland, the Netherlands, Spain, the UK and Austria. She has appeared at the Metropolitan Opera (New York), the Opera Bastille (Paris) and the Lincoln Center (New York). In the 2002-2003 season, Olga Trifonova sang at the premiere of the opera The Golden Cockerel (directed by E. Ichikawa), staged by the Mariinsky Theatre as part of the Saisons russes at the Theatre du Chatelet, and in 2004 she appeared as Marfa in the premiere performance of The Tsar's Bride at the Diaghilev Festival in Groningen (staged by Yuri Alexandrov, conducted by Valery Gergiev).

Olga Trifonova collaborates with the greatest conductor of the age, among them are Robert Kraft, Christophe von Donangy, Placido Domingo, Valery Gergiev, Hans Graf, Kent Nagano, Daniel Raiskin, Yuri Temirkanov and Michael Tilson Thomas. She also took part in Tony Palmer's film version of Parsifal (with such world opera stars as Placido Domingo, Violetta Urmana, Matti Salminen and Nikolai Putilin).

Olga Trifonova has made CD recordings of Stravinsky's Le rossignol (London Philharmonic Orchestra conducted by Robert Kraft) and Boris Godunov (Mariinsky Theatre Orchestra under Valery Gergiev).