Billy McMillan (disambiguation)
# Billy McMillan (disambiguation)

Billy McMillan (died 1991) was an Irish footballer.

Billy McMillan may also refer to:

* Billy MacMillan (1943–2023), Canadian hockey player and coach
* Billy McMillen (1927–1975), Irish republican activist and an officer of the Official Irish Republican Army
* Billy McMillon (born 1971), American baseball player
