Jennifer Cossitt (née Birchall, born 22 June 1948 in Redcar, Yorkshire, England) was a Progressive Conservative party member of the Canadian House of Commons. She was a business executive by career.Her husband was Thomas Cossitt, member of Parliament for the Leeds—Grenville electoral district. Following his death in 1982, she campaigned at the riding in a 12 October 1982 by-election and won the seat.