Leo Slezak (German pronunciation: [ˌleːo ˈslɛzak]; 18 August 1873 – 1 June 1946) was an Austrian dramatic tenor.[1] He was associated in particular with Austrian opera as well as the title role in Verdi's Otello.[2][3] He is the father of actors Walter Slezak and Margarete Slezak and grandfather of the actress Erika Slezak.