Sir William Job Collins, KCVO, FRCS (9 May 1859 – 11 December 1946) was an English surgeon, anti-vaccinationist and later a Liberal politician and legislator.

His Times obituary reported that "his further progress toward the staff of the school was barred by the heterodox views he held, and freely expressed, on the subject of vaccination."

He subsequently became a Fellow, Scholar and gold medallist in Sanitary Science and Obstetrics at the University of London, graduating as BSc in 1880 and MD in 1881.

Collins commented that: In vaccination we use an animal poison whose mode of action is unknown to us, and whose effects we cannot measure; and that no amount of care and caution can obviate a repetition of disasters like that which has recently shocked us at Norwich.

[3] In later life he turned to politics, elected as member of London County Council for St Pancras in 1892, reaching the office of chairman in 1897.