The SZD-17X Jaskółka L was a single-seat high-performance competition glider designed and built in Poland at Szybowcowy Zakład Doświadczalny (Glider Experimental Works) in Bielsko-Biała in 1955.
Made by Szybowcowy Zakład Doświadczalny.
It is the successor of the SZD-14x Jaskółka M .