Sir William Samuel Glyn-Jones (1869 – 9 September 1927) was a British Liberal Party politician and pharmacist.

[1] He was born to Welsh parents in Worcester in 1869, the son of George Griffith Jones.

He married in 1894, Mary Evans of Tower Hill, Llanybydder, Carmarthen.

[2] His eldest son, Hildreth Glyn-Jones, became an eminent barrister and High Court judge.

Standing for the first time, he fought the January 1910 General Election as Liberal candidate for Stepney, coming second.