Thatto Heath is an area of St Helens, in Merseyside, England.

The area is bordered by Eccleston, Rainhill, Ravenhead, Sutton and Windle.

[1] Thatto Heath is a ward of the Metropolitan Borough of St Helens.

[2] The three elected councillors for Thatto Heath ward are Cllrs Nova Charlton, Robyn Hattersley and Richard McCaulley of the Labour Party.

The area is served by Thatto Heath railway station, on the City Line between Liverpool and Wigan.