Wheal Jane is a disused tin mine near Baldhu and Chacewater in West Cornwall, England, United Kingdom.

Given the complexity of ore formation near granitic emplacements, amounts of arsenic, copper, silver and zinc were also worked at some time.

Work recommenced at low intensity in the run up to World War II but interest was turning to more modern processing techniques to recover more tin from what was already available and the old mine spoil was re-worked until 1946.

It was re-opened again in 1969 and much development work was done underground and in improving the surface processing facilities and ownership eventually passed to Rio Tinto Zinc.

These eventually overtopped the drainage systems in January 1992 and acid mine drainage rose through the abandoned mine, escaped into the surface water systems, and flowed into the Carnon river and eventually into Falmouth Bay, killing fish and contaminating wild fowl.