Lois Mitchell is currently a senior partner and founder of Rainmaker Global Business Development, a consulting and marketing firm.
Mitchell sits on the board of directors for UBS Bank (Canada), Mitacs and Canada World Youth and is co-founder and vice-chair of the Global Business Forum.
She is also governor of the Canadian Women's Hockey Association, co-chair of the Gold Medal Plates Dinner in Calgary in support of current and aspiring Canadian Olympians, chairs the advisory board of the Latin American Research Centre at the University of Calgary, and was a board member of the Alberta Foundation for the Arts.
In 2012 she was appointed to the Order of Canada.
Lieutenant-governors are appointed by Gov. Gen. David Johnston on the recommendation of the prime minister and serve terms of at least five years, and act as the province's vice-regal representative.
Harper thanked Donald S. Ethell for his service as lieutenant-governor of Alberta since May 11, 2010.
"Lois Mitchell is an exceptional Canadian who is well known for her leadership, dedication and community spirit," Harper said in a news release.
"She is an excellent choice for Alberta's next lieutenant-governor and I am confident she will make an important contribution to Alberta's future."