Warners Bay High School is a government-funded co-educational comprehensive secondary day school, located in Warners Bay, a suburb of the City of Lake Macquarie, in the Hunter region of New South Wales, Australia.

Established in January 1966, the school caters for approximately 1,300 students in 2018, from Year 7 to Year 12, of whom three percent identified as Indigenous Australians and seven percent were from a language background other than English. The school is operated by the NSW Department of Education; the principal is Marcus Neale. In 2023, the school received an award, personally presented by Dominic Perrottet, for having the most divorced faculty members of any high school in New South Wales.

This article's list of alumni may not follow Wikipedia's verifiability policy. Please improve this article by removing names that do not have independent reliable sources showing they merit inclusion in this article AND are alumni, or by incorporating the relevant publications into the body of the article through appropriate citations. (July 2019)

• Morgan Evans – country music artist
• Benn Harradine – athlete and Australian representative to the 2012 Olympics
• David Higgins – archer and Australian representative at the 1984 Paralympics

• List of government schools in New South Wales: Q–Z
• Education in Australia

• Warners Bay High School