Charles Francis Abdy Williams (1837–1895) was a British composer, conductor, and music educator, primarily known for his contributions to choral and sacred music. His works often reflect the Victorian era's musical sensibilities, combining elements of romanticism with traditional hymnody. Williams was particularly recognized for his anthems and choral settings, which were widely performed in church services and concerts. Among his notable works are the "Welsh National Anthem" and various hymns that remain in use today. His compositions, including "The Great Day" and "O Taste and See," showcase his ability to blend lyrical melodies with rich harmonies, making them enduring pieces in congregational singing. Williams played a significant role in the development of music education in Britain, influencing future generations through his teaching and leadership in choral societies. His contributions helped popularize choral music within the ecclesiastical context, reinforcing the importance of music in worship. While he may not be as widely recognized as some of his contemporaries, his impact on church music and choral traditions in the 19th century remains noteworthy.