Wanniarachchi

Wanniarachchi is a surname. Notable people with the surname include:


 * Dharmadasa Wanniarachchi (1921-2007), Sri Lankan politician
 * Manju Wanniarachchi (born 1979), Sri Lankan amateur boxer
 * Neranjana Wanniarachchi (born 1998), Sri Lankan cricketer
 * Pavithra Wanniarachchi, Sri Lankan politician
 * Thisuri Wanniarachchi, Sri Lankan author