Olga Gaiko graduated from the Belarusian State Choreographic College. She joined the ballet company of the National Academic Bolshoi Opera and Ballet Theatre of the Republic of Belarus in 1997.

She has worked with outstanding choreographers and ballet masters, such as Andris Liepa, Valentin Elizariev, Nikita Dolgushin, Nina Ananiashvili, etc.

Siren / Le Villi. Fatum

Åse / Peer Gynt

Kitri / Don Quixote

Odette/ Odile / Swan Lake

Aurora, the Lilac Fairy / The Sleeping Beauty

The Tsar Maiden / The Little Humpbacked Horse

The title role / Giselle

The title role / La Esmeralda

Medora / Le Corsaire

Nele / The Legend of Eulenspiegel by Eugene Glebov

Rogneda / Passions (Rogneda) by Andrei Mdivani

Carmen / Carmen Suite

The title role / The Firebird

The Chosen Maiden / The Rite of Spring

The Beloved, the Harlot / Carmina Burana

Lise / La Fille mal gardée

Lady Macbeth / Macbeth

Phrygia / Spartacus

Nikiya / La Bayadère

Masha / The Nutcracker

Juliet / Romeo and Juliet

Abbie / Desire Under the Elms

Zarema / The Fountain of Bakhchisarai

Isolde / Tristan and Isolde

The Fairy / Cinderella

The Sylph / La Sylphide

The title role / Thamar

Zobeide / Scheherazade

The title role / Paquita

The Stepmother / Snow White and the Seven Dwarfs by Bogdan Pavlovsky

Dark Angel / Serenade

Jadwiga / Vitaut by Vyacheslav Kuznetsov

Aysha / Seven Beauties by Kara Karaev

Taglioni / Pas de Quatre

The title role / Laurencia by Alexander Krein

The Beloved / Le Petit Prince by Eugene Glebov

With the company of the Bolshoi Theatre of Belarus, she has toured Spain, France, Greece, Belgium, the Netherlands, Poland, Bulgaria, China, Egypt, South Africa, Korea, etc.

 Olga Gaiko danced twice in the opening of the Days of Belarusian Culture in Russia (guest performances of Passions (Rogneda) in 2001 and Romeo and Juliet in 2004 at the Bolshoi Theatre of Russia).

 In December 2005, she performed the lead role in Swan Lake given as part of the opening of the Days of Belarusian Culture in China. 

 In 2007 and 2008, she appeared with the company in the Days of Belarusian Culture in Egypt and Syria.