Leslie Weir is a Canadian librarian, one of the founding architects of Scholars Portal and former president of the Canadian Association of Research Libraries. Ms. Weir was the University Librarian at the University of Ottawa from 2003 to 2018. On May 27, 2019 she was appointed Librarian and Archivist of Canada, effective August 30, 2019. Ms. Weir is the first woman to become Librarian and Archivist of Canada since the National Library of Canada and the National Archives of Canada were merged to form Library and Archives Canada in 2004.