Robert Day
Robert Day may refer to:
- Robert Day (antiquarian), Irish antiquarian and photographer
- Robert Day (Australian politician), New South Wales politician
- Robert H. Day (judge), lawyer and judge in Ohio
- Robert H. Day (soldier), Union officer, railroad engineer and electrical engineer
- Robert Day (Irish politician, born 1746), Irish politician, barrister and judge
- Robert Day (Irish politician, born 1884), Irish Labour Party politician from Cork
- Robert Day (cartoonist), American cartoonist
- Robert L. Day, mayor of Boise, Idaho
- Robert Day (director), English film director
- Robert Day (footballer), former Australian rules footballer
- Robert Addison Day, businessman
- Robert Day (basketball), American basketball player