Blair MacMillan is an actor, writer, and comedian from Toronto. She is a co-host and co-creator of the podcast Girl Historians, which has amassed millions of listens worldwide. Her comedy duo, 24 Double B, has performed across North America and have been the recipients of numerous accolades. Blair has also acted, directed, and written numerous shorts that have been screened at festivals across Canada and the USA.

Blair attended Wexford CSA, and is a graduate of Queen's University.