The Honourable Judith Guichon was sworn-in as the 29th Lieutenant Governor of British Columbia on November 2, 2012. Prior to this appointment she owned and operated Gerard Guichon Ranch Limited in the Nicola Valley in the British Columbia Interior. The Guichon family has ranched in the area since 1878 and Her Honour's father-in-law was awarded the Order of Canada in 1974 for his leadership in Cattleman's Associations and his contribution to agriculture in Canada. Two of her four children now manage the ranch with a 700 head cow calf and 700 yearling operation.

Her Honour studied Holistic Management, a farming method which promotes sustainable management of livestock by emphasizing their natural habitat. Along with her late husband, commercial pilot Lawrence Guichon, she introduced Holistic Management to the ranchers of British Columbia.

Her Honour was also involved in several organizations. She served on the local hospital board and Community Health Council and was on the Community Health Foundation board. Prior to this, she served as a 4-H Leader and started a recycling society in Merritt, B.C. with neighbours. She also served as a director for the Fraser Basin Council of B.C., director of the Grasslands Conservation Council of B.C., member of the Nicola Water Use Management planning committee and played the flute in the Nicola Valley Community Band.

Prior to her term as Lieutenant Governor, Her Honour served on the Provincial Task Force on Species at Risk and completed a two-year term as the president of the British Columbia Cattlemen's Association. She has also been a part of the Ranching Task Force for B.C. and the British Columbia Agri-Food Trade Advisory Council.

Born in Montreal, Quebec, and raised on a farm near Hawkesbury, Ontario, Her Honour moved to British Columbia in 1972. She and her husband, Bruno Mailloux, maintain a residence in the Nicola Valley.