Henry Duncan McLaren, 2nd Baron Aberconway, CBE (16 April 1879 – 23 May 1953) was a British politician, horticulturalist and industrialist.

Born in Richmond upon Thames, he was educated at Eton and obtained a Master of Arts from Balliol College, Oxford.

In 1906 he was elected Member of Parliament (MP) for West Staffordshire as a Liberal, and was Private Under-Secretary to the President of the Board of Trade, David Lloyd George, until 1908.

He would also inherit the family estate (originally his maternal grandfather's) in Conwy, North Wales, where he extensively developed and added to the Bodnant Garden.

He sponsored several botanical collectors, including George Forrest, and Rhododendron aberconwayi is named in his honour.