Kala Keerthi Carl Muller (22 October 1935 – 2 December 2019) was an award-winning Sri Lankan writer, poet and journalist best known for his trilogy about Burghers in Sri Lanka: The Jam Fruit Tree, Yakada Yaka and Once Upon A Tender Time.
He started his first job as a weighbridge clerk at the Mosajee's Wystevyke Mill in Colombo, thereafter he joined the Royal Ceylon Navy and served as a signalman for four years.
This started his writing career working in advertising, travel and entertainment, before moving into journalism in Ceylon, Dubai and Bahrain.
He worked for the Times of Oman during the Gulf war before returning to Sri Lanka due to ill health.
Muller retired from his lifelong work as the onset of dementia and other medical ailments took a toll on his health.