Naděžda Kniplová (née Pokorná; 18 April 1932 – 14 January 2020) was a Czech operatic soprano who had an active international career from the 1950s through the 1980s. Kniplová possessed a large voice with a sonorous, metallic, dark timbre that was particularly well suited to the dramatic soprano repertoire. While she was most admired in Czech operas and as Wagnerian heroines, she sang a wide repertoire that also encompassed Italian, Russian, and Hungarian language roles. A fine actress, her performances were praised for their intensity and pathos. However, some critics commented on a certain lack of steadiness or purity in her singing. Her voice is preserved on a number of recordings made on the Supraphon and Decca labels.