Matilda Grace Lowther (born 10 July 1995) is a British fashion model.

Lowther is the eldest of four children of Eton-educated Hon. James Nicholas Lowther and Vanessa, daughter of Alan Catchpole, of Broke Hall, Nacton, Suffolk. Her paternal grandfather was James Lowther, 7th Earl of Lonsdale.^[2][3][4][5] Her grandmother, Nancy Ruth Cobbs, Countess of Lonsdale, was from Pacific Palisades, California.^[6] She graduated from Queen Margaret's School, York.^[4]

In her debut season, Lowther opened Burberry's S/S and F/W 2014 fashion shows.^[7] She has walked for brands including Miu Miu, Comme des Garçons, The Row, Rodarte, Hermès, and Bottega Veneta.^[8] Lowther co-starred with models such as Jourdan Dunn and Lily Donaldson in a Balmain campaign.^[9]

Her first cover was for British Vogue’s Miss Vogue (the equivalent of Teen Vogue).^[10] She has also been on the cover of Vogue Portugal, Telegraph's magazine,^[11] and appeared in editorials for British GQ, British Vogue, Vogue Germany, Vogue Japan, Vogue China, Vogue Paris, Vogue Mexico, Interview, Dazed, Elle, WSJ, i-D, W, L'Officiel, and Love.