Thomas Plantagenet Bigg-Wither (16 October 1845, in Hampshire – 19 July 1890, in High Seas) was an English engineer and writer.
[2] Charles Bigg Wither, a younger brother of his father, was thus his uncle.
[3] Between 1871 and 1875, he participated in an expedition in the Brazilian province of Paraná in southern Brazil.
He also published an article called "The valley of the Tibagy, Brazil" with the Royal Geographical Society.
In 1890, he became ill and when he returned to England, died on the ship and was buried at sea.