Cockaynes Wood is a 20.2-hectare (50-acre) nature reserve between Wivenhoe and Alresford in Essex, United Kingdom.

[1][2] Cockaynes Wood is ancient, and was listed in the Domesday Book.

The nature reserve also includes Villa Wood and more open areas, with heathland, meadows, and water-filled former quarries.

[1] A footpath from Ballast Quay in Wivenhoe to Cockaynes Lane in Alresford goes through the site.

The areas around the water-filled quarries are closed to the public.