László Istvan Heltay (5 January 1930 – 17 December 2019) was a Hungarian-born British conductor and choral director. Heltay is best known for contributing to the establishment of the Brighton Festival Chorus, the Chorus of the Academy of St Martin in the Fields and the Schola Cantorum of Oxford. He was described as: "...one of the finest and most inspiring choral trainers in the world...through his efforts the whole British choral tradition has been given a new look and a new set of standards to aim for."