Ambrose Adeya Adongo (1947 – 1 March 2001) was secretary-general of the Kenya National Union of Teachers (KNUT) from 1970 until his death in 2001. At 31 years, he holds the record as longest-serving secretary general.
Adongo was elected to the position of secretary-general in 1969 and assumed office the next year.
The most significant event of his career was the strike organised by KNUT over salaries in October 1997, which provoked President Daniel Moi to call Adongo a "fool".
Adongo died on March 1, 2001, while still in office, after an illness. He was succeeded by Francis Ng'ang'a, who had served as his deputy for eight years.