William Ifor Jones (born 22 February 1930) is a notable Welsh composer and conductor, primarily known for his contributions to classical and choral music. He studied at the University College of Wales, Aberystwyth, and later at the Royal Academy of Music in London. Jones's works often reflect his Welsh heritage, incorporating traditional themes and melodies. His notable compositions include choral works such as "A Welsh Mass," "Cantata for the Seasons," and various arrangements of traditional Welsh hymns. He has also composed orchestral pieces and chamber music, showcasing his versatility across genres within the classical spectrum. Jones's impact on music extends beyond composition; he has been influential in promoting Welsh music and culture through his work as a conductor and educator. He has held positions with various choirs and orchestras, contributing to the development of choral music in Wales and nurturing the next generation of musicians. His dedication to Welsh music has helped elevate its profile on both national and international stages, making him a significant figure in the landscape of contemporary classical music in Wales.