The Monroe–Pinkney Treaty of 1806 was a treaty drawn up by diplomats of the United States and Britain as a renewal of the Jay Treaty of 1795. It was rejected by President Thomas Jefferson and never took effect. The treaty was negotiated by minister to England James Monroe and his associate William Pinkney on behalf of the administration of President Thomas Jefferson, and Lord Holland and Lord Auckland on behalf of the "Ministry of All the Talents" government headed by Lord Grenville.