Elizabeth Jane Weir ONB (born February 20, 1948) is a Canadian lawyer and politician in New Brunswick.
In 2000, Weir released documents accessed under the Right to Information Act surrounding a $1 billion upgrade project for the Irving Oil Refinery being put in motion without being completely assessed for its environmental impact, suggesting that the government "ignored the public interest and pandered to big business.
Many delegates balked, especially at the assumption that they could push through a sudden constitutional change in a party often dearly concerned with internal process.
On October 8, 2004, Weir announced that she would be stepping down from the leadership of the New Brunswick NDP but would stay on until a successor was chosen.
Allison Brewer was chosen as her successor at a September 2005 leadership convention and Weir resigned her seat from the legislature on October 13, 2005 to accept the appointment to be the first president and CEO of the new New Brunswick crown corporation the Energy Efficiency and Conservation Agency.