Elisabeth Chojnacka (born Elżbieta Ukraińczyk; 10 September 1939 – 28 May 2017) was a Polish harpsichordist living in France. She was one of the world's foremost harpsichordists specializing in the performance of contemporary harpsichord music.
Chojnacka earned a degree from the Fryderyk Chopin Music Academy in Warsaw in 1962, after which she moved to Paris, where she studied with Aimée Van de Wiele. She presented the premiere performances of many works for harpsichord, both solo as well as with ensemble and/or electronics. Over 80 composers dedicated works to her. While she was known particularly for her performance of new music, she also played early music in her concerts, as well as in some of her recordings. In performance, she generally performed with her harpsichord slightly amplified.