National Lyceum ("Liceu Nacional") is a lyceum (secondary school) located at Avenida Marginal 12 Julho in the city of São Tomé, São Tomé and Príncipe. It is one of the oldest secondary schools in the nation. It currently has an estimate of 6,000 students. The lyceum is located on the seafront, east of the city centre. 
The lyceum was opened on 6 October 1969 as a technical school, "Escola Técnica Silva e Cunha". The building was designed by architect Mário de Oliveira, who was also responsible for the 1962 urbanisation plan for São Tomé. It became a "liceu" after independence. For 36 years, until 2011, it was the only high school in the country.
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