Charles Melville Louisson (1840 – 19 April 1924), known as Charles Louisson or Chas Louisson, was a New Zealand politician. Born in London, and relocated to Australia as a teenager, he worked in farming and on the gold fields. He moved to Christchurch to join his brother Alfred (b. 1832) in business, which they conducted in transport, as merchants and farmers in various places in the South Island. Back in Christchurch, they were joined by their brother Cecil (b. 1837) and bought a brewery, which under their stewardship became very successful.