Alfred Williamson (1893–1917) was an Australian rules footballer and soldier. Born in Toongabbie to Reuben and Annie Williamson, he studied at Sale Agricultural High School. In 1914, he transferred to Melbourne High School, where he worked as a manual arts teacher until his enlistment in the military.

Williamson is also known as the great-uncle of Gary Ablett Sr. and the great-great-uncle of Gary Ablett Jr.