The Right Honourable David John MacLean (born May 16, 1953, Scotland) is a United Kingdom politician, and Conservative Member of Parliament for Penrith and The Border.

Educated at Fortrose Academy, Fortrose, The Black Isle, Highland, and at the University of Aberdeen, he was elected to the Commons in a by-election in 1983, and served as a junior minister under Margaret Thatcher and John Major. He was seen as a Thatcherite, saying about beggars that 'I always give them something - I give them a piece of my mind.'

He was made Chief Whip of the opposition under Iain Duncan Smith. When Duncan Smith lost a vote of confidence, MacLean tendered his resignation but was reappointed to the position under new leader Michael Howard. He returned to the back benches upon the election of David Cameron as leader in 2005.