Rach is a diminutive of the name Rachel or Rachael. The name is of American origin. The meaning of Rach is ‘ewe’. It is a variant of the Hebrew name 'Rachel'. It is also of African origin and refers to 'frog'. In Middle High German, the meaning of Rach is ‘rough, stiff’. Rach is also a topographic name, referring to an area that is ‘steep, rough’. It is not a common name but is rather used as a shortened form of the name Rachel, which is a popular name. Well-known personalities with this name include Johannes Rach, a well-known Danish artist who worked in Indonesia and Copenhagen.