Sir John Maxwell, 8th Baronet, FRSE (12 May 1791 – 6 June 1865) was a Scottish landowner and politician.

[1] Maxwell was born at Pollok House, Renfrewshire on 12 May 1791 the son of Hannah Anne Gardiner and her husband, Sir John Maxwell, 7th Baronet.

In 1854 he was elected a Fellow of the Royal Society of Edinburgh his proposer being Thomas Makdougall Brisbane.

[4] He was influential in the restoration of Haggs Castle in 1860.

[5] In 1839 he married Lady Matilda Harriet Bruce (d. 1857).