Nathaniel Hubert John Westlake FSA (1833–1921) was a 19th-century British artist specialising in stained glass.

A leading designer of the Gothic Revival movement, his works include The Vision of Beatrice (1864), commissioned for an exhibition of stained glass held at the South Kensington Museum (renamed the Victoria and Albert Museum in 1899).

[5] In 1896, Lavers & Westlake were commissioned to reglaze two central lights in the great hall windows at Mary Datchelor Girls' School, Camberwell.

The subjects were Lady Jane Grey discourses with Roger Ascham and By Industry and Perseverance, symbolising the importance of female endeavour in higher education.

[8] There is a plaque on 20 Endell Street, which was Westlake's home during the 1880s, next to the offices of Lavers and Barraud.