The Plantation Act 1740 (referring to colonies) or the Naturalization Act 1740 are common names used for an act of the British Parliament (13 Geo. 2 c.7) that was officially titled An Act for Naturalizing such foreign Protestants and others therein mentioned, as are settled or shall settle in any of His Majesty's Colonies in America. The Act became effective on 1 June 1740 and allowed any Protestant alien residing in any of their American colonies for seven years, without being absent from that colony for more than two months, to be deemed "his Majesty’s natural-born subjects of this Kingdom."