Wanasinghe is a surname. Notable people with the surname include:
- Gunaratne Wanasinghe (1948–1989), Sri Lankan political activist
- Hamilton Wanasinghe (born 1935), General in the Sri Lanka Army
- Pasan Wanasinghe (born 1970), Sri Lankan cricketer
- Sanjaya Wanasinghe (born 1968), general in the Sri Lanka Army
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