Herath is a Sinhalese surname. Notable people with the surname include:
Charitha Herath, Sri Lankan academic
Chatura Herath (born 1987), Sri Lankan cricketer
Cyril Herath), Sri Lankan police officer
Harold Herath (died 2007), Sri Lankan politician
Jayarathna Herath, Sri Lankan politician
K. U. K. Herath, Sri Lankan cricketer
Kanaka Herath, Sri Lankan politician
Maheepala Herath, Sri Lankan politician
Rangana Herath (born 1978), Sri Lankan cricketer
Renuka Herath, Sri Lankan politician
Samansiri Herath, Sri Lankan politician
Vijitha Herath (born 1968), Sri Lankan politician