Ian Greer (5 June 1933 – 4 November 2015) was a British political lobbyist whose career was affected by the cash-for-questions affair.

Ian Bramwell Greer was born on 5 June 1933, the son of Salvation Army parents. He was educated at Cranbrook College, Essex, and Victoria School, Glasgow.

In October 1994, The Guardian newspaper alleged that Greer had bribed two Conservative Members of Parliament in exchange for asking questions in parliament, and other tasks, on behalf of the Egyptian owner of Harrods department store, Mohamed Al-Fayed. Greer began legal action against The Guardian with Neil Hamilton, but the co-plaintiffs withdrew in 1996 citing a conflict of interest. Ian Greer Associates went into liquidation and Greer moved to South Africa.

In 2013, he returned to London from South Africa, and married his partner Clive Ferreira.

He died on 4 November 2015