Tang Ching-sung (唐景崧) was the first President of the Republic of Formosa. He was inaugurated as the President of the Republic of Formosa on May 25, l895 and then issued a declaration of independence from the Ching dynasty. The declaration was not sincere, Tan Ching-sung was a Chinese official and the declaration of independence was an attempt to stave off a Japanese invasion.

The Japanese invaded northern Taiwan on May 29, l895 and President Tang Ching-sung disguised himself as an old woman and fled to mainland China on June 4. He was succeeded by Liu Yung-fu on the next day.