Katharine Cameron RWS RE (26 February 1874 – 21 August 1965) was a Scottish artist, watercolourist, and printmaker, best known for her paintings and etchings of flowers.

She studied at the Glasgow School of Art, from 1889 to 1893 where she became associated with a small circle of female students who called themselves 'The Immortals'.

During her time at the Glasgow School of Art she contributed illustrations for The Yellow Book and the student publication The Magazine.

She illustrated a series of three fairytale books for the Jacks (In Fairyland, The Enchanted Land, and Celtic Tales), which earned majority positive feedback from her artistic contemporaries.

This title, showcasing unusual and exotic plants, signalled a shift in her artistic interest to her "real love," flower painting.

Cameron and her husband Arthur Kay, made regular trips to the Scottish Highlands where she spent time sketching the landscape, particularly the area around Connel, Achnacree Moss, Loch Etive, and Benderloch.

In 1948, art critic R. H. Westwater stated "Miss Cameron gives us not only the delicious texture of flower and leaf, the sense of delicate growth and movement expressed with an impeccably sensitive draughtmanship.

"[3] Her final one-woman exhibition in 1959 at T&R Annan & Sons, Glasgow consisted of 56 watercolours and drawings of the West Highlands and Islands, which had painted throughout her career.

She exhibited widely, including at the Royal Scottish Academy (Edinburgh), the Society of Women Artists, Aitken Dott (The Scottish Gallery, Edinburgh), the Fine Art Society (London), Walker Art Gallery (Liverpool), Annan (Glasgow), James Connell & Sons (Glasgow & London), and Goodspeed's (Boston).