Olivier Gardon has taught in prestigious establishments: Hochschule HMTMH Hannover, Mozarteum Sommerakademie Salzburg, and the Conservatoire de Paris (CRR). Currently, Olivier Gardon teaches at the Schola Cantorum in Paris. Many universities and Hochschule around the world have invited him to give masterclasses. They include Toho Gakuen Tokyo, Yonsei University Seoul, Bowdoin University (Maine), Royal Conservatory of Brussels, Trinity College of Music Laban (London) Leipzig, Lübeck, and more. He has served as a judge at numerous international competitions. Many of his students have won First Prizes and awards in prestigious international piano competitions (Concours Marguerite Long, Concours de Genève, Isang Yun, etc).

Olivier Gardon's discography includes works by Beethoven, Brahms, Bizet, Debussy, Liszt, Mussorgsky, Milhaud, Schumann, complete piano works by Louis Vierne, and complete chamber music by Alkan, with Kang Dong Suk, and Yvan Chiffoleau (Prix Spécial de la Nouvelle Académie du disque français). In 2011, Bärenreiter published the new Urtext Edition of Vierne's piano Préludes and Nocturnes, revised by Mr. Gardon.

Olivier Gardon worked under the direction of Pierre Sancan and Jean Hubeau at the Paris Conservatory, and he perfected his skills with Lili Kraus, György Sebök, Geza Anda, and Jean Fassina. He has garnered numerous awards in prestigious international competitions, including the Marguerite Long competition (Grand Prix 1973), the Queen Elisabeth Music Competition (1975), the Viotti International Music Competition, Senigallia, and the Casella Piano Competition in Naples.

His first critics hailed him as a "highly colorful artist," and praised his "elegance, ease, and refined touch" as well as his "strong stage presence, his torrential sensitiveness, his ability to work the keyboard like a sculptor giving shape to living material."

Since then, his career as a soloist and chamber musician has taken him to all the greatest musical venues of the world (Théâtre des Champs-Elysées, Salle Pleyel in Paris, Grosses Festspielhaus in Salzburg, Bunka Keikan and the Kioi Hall in Tokyo, Izumi Hall Osaka, the Dvorak Hall in Prague, the Théâtre Solis in Montevideo, and more). He has performed with the London Symphony Orchestra, the Salzburg Mozarteum Orchester, the Orchestre philharmonique de Radio-France, the Sofia Philharmonic Orchestra, the Prague Chamber Orchestra, and the Stuttgart Chamber Orchestra.