Ignacy Koschembahr-Lyskowski (1864–1945) was a Polish jurist and scholar of civil law.
After studies in Berlin and a habilitation in Breslau, Koschembahr-Lyskowski taught Roman law at the universities of Fribourg, Lemberg and Warsaw from 1895 to 1930.Koschembahr-Lyskowski was a member and, since 1927, the vice president of the legislative committee that sought to reunify the law of the re-established Polish republic.
He created a draft of the general provisions of a Polish civil code.