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.

• The 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, Olga Gaiko has toured Spain, France, Greece, Belgium, the Netherlands, Poland, Bulgaria, China, Egypt, South Africa, Korea, etc.

She 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.