Janetta Manners, Duchess of Rutland (née Hughan; 8 September 1836 – 11 July 1899) was an English aristocrat and writer.

She was the eldest daughter and co-heiress of Thomas Hughan, of Airds, Galloway, and the former Lady Louisa Georgiana Beauclerk.

[2] Before her husband succeeded to the dukedom, and while she was known as Lady John Manners, she wrote several works, all published in Edinburgh by William Blackwood and Sons, including, Some personal recollections of the later years of the Earl of Beaconsfield, K.G.

(better known as Prime Minister Benjamin Disraeli), published in 1881,[4] Employment of women in the public service, published in 1882,[5] Encouraging experiences of reading and recreation rooms, and hints how to obtain really good books at moderate prices: Being a sequel to 'Advantages of free libraries and recreation rooms, published in 1886.

Together, they lived at Belvoir Castle and were the parents of seven children:[7] She brought a Scottish property to the marriage, St Mary's Tower in Dunkeld.