Sheffield Park Garden is an informal landscape garden five miles east of Haywards Heath, in East Sussex, England. It was originally laid out in the 18th century by Capability Brown, and further developed in the early 20th century by its then owner, Arthur Gilstrap Soames. It is now owned by the National Trust.

In 1769, the estate was sold to aspiring politician John Holroyd. Holroyd did well and supported the slave trade. He was created Baron Sheffield in 1781 when it was called "Sheffield Park". John lived there with his wife Maria and spent a fortune on his house and estate. James Wyatt remodelled the house in the fashionable Gothic style and Capability Brown was commissioned to landscape the garden. Humphry Repton followed Brown in 1789–1790. The original four lakes form the centrepiece of the garden. It is particularly noted for its plantings of trees selected for autumn colour, including many Black Tupelos.

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