Tyldesley is a market town located in the Metropolitan Borough of Wigan within Greater Manchester, England. It sits within the boundaries of the historic county of Lancashire, situated north of Chat Moss near the foothills of the West Pennine Moors.
The town is positioned approximately eight miles southeast of Wigan and nine miles northwest of Manchester. According to the 2001 United Kingdom Census, the Tyldesley built-up area subdivision, excluding Shakerley, had a population of 16,142.