Richard Weston, 1st Earl of Portland, KG, was Chancellor of the Exchequer and later Lord Treasurer of England under James I and Charles I, being one of the most influential figures in the early years of Charles I's Personal Rule and the architect of many of the policies that enabled him to rule without raising taxes through Parliament.

The Chancellor of the Exchequer, often abbreviated to Chancellor, is a senior minister of the Crown within His Majesty's Government, and head of His Majesty's Treasury. As one of the four Great Offices of State, the chancellor is a high-ranking member of the British Cabinet.