Evan Leigh (21 December 1810 – 2 February 1876) was an author, inventor, engineer and manufacturer of cotton spinning equipment.

His invention of the twin screw for steam ships was patented in July 1849 and taken up both for mercantile and Royal Navy fleets.

He patented among other things the Self Stripping Engine, the Derby Doubler or Lap Machine and the Loose Boss Top Roller.

Supplying machines worldwide from his Collyhurst Works in Miles Platting, Manchester after moving from Cotton Street, Ashton-under-Lyne.

[2] Evan Leigh died at his home: Clarence House, Chorlton-on-Medlock after a bout of chronic bronchitis on Wednesday, 2 February 1876 aged 65.