Robert McMillan
Robert McMillan may refer to:
- Robert S. McMillan (architect), architect and co-founder of The Architects Collaborative
- Robert S. McMillan (astronomer), astronomer at the University of Arizona
- Robert McMillan (Australian judge), Chief Justice of the Supreme Court of Western Australia
- Robert Johnston McMillan, U.S. federal judge
- Robert McMillan (farmer), member of the New Zealand Legislative Council
- Robert McMillan (footballer), Welsh footballer
- Robert MacMillan, Scottish national rugby union player
- Bob MacMillan, Canadian hockey player and politician