Dorothy Catherine Wentworth Jenkin (née Venning; 23 October 1892 – 13 April 1995) was a New Zealand watercolorist, botanical illustrator, and printmaker.

[5][6] Sometime in 1925 Thomas' contract with the Dunedin School of Art was not renewed and Jenkin and he moved their family to Invercargill.

[1] On their retirement in 1952 the Jenkin's moved to Stewart Island / Rakiura permanently,[1] building a log house that overlooked Paterson Inlet / Whaka a Te Wera,[2] and tending to an elaborate garden of rhododendrons, a cherry magnolia, kauri trees, mamaku, and many plants native to New Zealand.

[12] Around this time, at the suggestion of Cedric Smith, the curator at the Rakiura Museum, Jenkin undertook watercolour studies of Stewart Island fungi.

[2] Jenkin also undertook studies of Stewart Island orchids, which inspired the publication of a book on her work.

[2] In 1971 Jenkin donated one of her husband's works, a portrait of Alfred Henry O'Keeffe, to the Dunedin Public Art Gallery.