Healey Nab or "The Nab" is an area of countryside owned partly by Lancashire County Council containing rolling hills, moorland, woodland, ponds and streams to the east of Chorley, Lancashire, between the M61 and the West Pennine Moors.

"Nab" is believed to derive from the Middle-English nabb, meaning promontory or headland.

They used to be linked to Lower Healey Bleach Works, a finishing works of the town's cotton industry, whose remaining structure has been incorporated into the site's conversion into a small industrial estate.

Its highest point is Grey Heights, at 682 feet, with views of Chorley, the skyline of Preston, Fiddlers Ferry power station in Merseyside, Jodrell Bank Telescope, and the silhouette of Blackpool Tower, Blackpool Pleasure Beach and the Irish Sea.

From Chorley, "The Nab" dominates the landscape and is the first significant height gain in the transition from a heavily populated area to the moorland of the West Pennine Moors.