The Science Teachers Association of Nigeria (STAN) is a non-for-profit making association of science, technology, engineering, and mathematics teachers. The founding of this association is a  bold and historic step aimed at meeting the challenges of science education in Nigeria was taken on 30 November, 1957 at Kings College, Lagos, by the inauguration of a country-wide association known as the Science Teachers Association of Nigeria (STAN).

The association had been formed on 21 June, 1957 following an invitation by the Late Mr. Feniobu Iroloye Ajumogobia then Acting Principal of Kings College, Lagos. Chief Ajumogobia invited science teachers from Lagos, Abeokuta, Ijebu-Ode and Ibadan to a meeting at which the decision to form an association of science teachers was taken by the sixteen science teachers who attended the meeting (13 from Lagos, 3 from Abeokuta). On 27 July of the same year, at the instance of Messrs Femi and Dotun Oyewole, who were then Senior Science Masters at Abeokuta Grammar School, nine science teachers from all over the then Western Nigeria met at Ibadan Grammar School and inaugurated the Western Branch of the Association.

The birth of STAN therefore marked the beginning of one of the most virile professional associations of science teachers in Africa. It should be noted that right from its inception as an association, STAN, in pursuance of its aims, started to critically examine the structure and content of science curricula in schools.
Membership of the association is drawn from primary, secondary, and technical schools as well as colleges of Education, Polytechnics, and Universities. Stan aims is to improve science, technology, engineering, and mathematics teachers effectiveness.