Resnik may refer to:

Regina Resnik (born August 30, 1922) is an American operatic singer.

Regina Resnik, the American mezzo-soprano, started a dramatic career ten months after earning her B.A. in Music at Hunter College. The role was Lady Macbeth under Fritz Busch in December, 1942 with the New Opera Company. A few months later, she sang Fidelio and Micaela under Erich Kleiber in Mexico City. In between she sang Santuzza with the fledgling New York City Opera and, performing "Ernani, Involami", won the Metropolitan Opera Auditions of the Air and her contract with that company for the 1944-45 season.

Miss Resnik's debut at the great theater was doubly dramatic - on one day's notice she substituted for Zinka Milanov as Leonora in Il trovatore eliciting acclaim from the public, the critics noting that all the vocal "virtuosity" and her stage presence as an actress were very impressive. During the next decade, she offered twenty heroines: Donna Elvira (Don Giovanni), Donna Anna (Don Giovanni), Fidelio, Sieglinde (Die Walküre), Gutrune (Götterdämmerung), Chrysothemis (Elektra), Rosalinda, Eboli (Don Carlo), Aida, Alice Ford (Falstaff), Tosca, Madama Butterfly and Musetta (La bohème). She was the Met's first Ellen Orford in Peter Grimes and created Delilah in Bernard Roger's world premiere of The Warrior. She then also began a long association with the San Francisco Opera. As for the voice, it was a dramatic soprano, rich and vibrant, it invited comparison with the legendary Rosa Ponselle. During these years, her teacher was Rosalie Miller and her life began with the legendary conductors; Otto Klemperer, Bruno Walter, George Szell, Fritz Reiner, William Steinberg and Erich Leinsdorf.