Anti-aircraft defences is an oil on canvas painting of 1940 by the British artist C. R. W. Nevinson in the collection of the Imperial War Museum.

It depicts anti-aircraft batteries and London Blitz spotlights.

[1] It was transferred to the museum in 1947 by the War Artists' Advisory Committee.

Nevinson was hugely disappointed not to be offered a governmental commission for his work, and so this painting was created at a time of discord between him and Kenneth Clark.

This article about a twentieth-century painting is a stub.