Kannangara (; ) is a surname found in Sri Lanka. Notable people with this name include:
C. W. W. Kannangara (1894 – 1969), a Sri Lankan lawyer and politician D. C. W. Kannangara (1913 – 1999), a Sri Lankan politician E. W. Kannangara (1894 – after 1963), a Sri Lankan civil servant R. C. Kannangara (1920 – 1946), a Sri Lankan plantation owner and politician Siri Kannangara (died 2024), a Sri Lankan-Australian sports doctor Upali Kannangara (1951 – 2018), a Sri Lankan musician Wimala Kannangara (1920 – 2006), a Sri Lankan politician