Eva-Maddalena Fleszar is a Swiss concert violinist. Her artistic work includes contemporary music as well as occasional collaborations involving period instruments. 

She received important artistic impulses from Lihay Bendayan, Shlomo Mintz, and Hrachya Harutyunyan, whose teaching had a profound impact on her musical development. Alongside, she studied Baroque violin as a second subject, which shaped her interest in historically informed approaches.

Her solo and chamber music performances had been recognized with several awards, including prizes at the international “Marcello Pontillo” competition in Florence and the "Étienne Vatelot – Rampal” competition in Cannes.

Together with pianist and organist Grzegorz Fleszar, she forms the Duo Fleszar, which focuses on chamber music for violin, piano, fortepiano, and organ, designing programs that span both well-known repertoire and lesser-known works.

In 2025, she will appear on a recording released by Naxos (Musiques Suisses), featuring world premiere recordings of works by the Swiss composer Robert Oboussier. She was invited to contribute to this project as a violinist, recording the Sonata Brevis and Sonatine.

She is also a member of the Kubus Kollektiv string quartet, which is dedicated to contemporary music and the development of new concert formats.