Sir Lachlan Hector Charles Maclean of Duart and Morven, 12th Baronet, CVO, DL (born 25 August 1942) is the 28th chief of Clan Maclean.

Lachlan Hector Charles Maclean was born on 25 August 1942, the elder child of Charles Maclean (later created a life peer as Baron Maclean) and his wife, Elizabeth Mann.

On 2 November 1966, he married Mary Helen Gordon (31 October 1943 – 30 December 2007), and the couple had five children.

On the death of his father in 1990, he succeeded him as a Baronet of Nova Scotia and as Chief of the Name and Arms of Maclean.

On 8 September 2010, he married Rosemary Matheson.