The purple noon's transparent might is an 1896 oil on canvas landscape painting by Australian artist Arthur Streeton.

The work's title was taken from the poem Stanzas Written in Dejection, near Naples by Percy Bysshe Shelley.

There is no painting into wet colour, no fumbling with the indefinite, yet in that precision of touch there dwells a mystery of value and light more profound than any romantic formula for the evasion of drawing ... Who but Streeton, gazing up the Hawkesbury River from the terrace across those far-stretched plains, could have imagined what he saw?

To divine the possibilities of a picture, its shapes and lighting, its character and composition in that wide field, required the intuition of genius.The painting was included in the 1898 Exhibition of Australian Art in London where a contemporary reviewer claimed it "would hold its own in any London gallery".

[2] The work was acquired by the National Gallery of Victoria in Melbourne in 1896 and remains part of its collection.