Truro Cathedral is a cathedral in the city of Truro in Cornwall in south-west England.

It was built in the 19th century (from 1879) on the site of a 16th century parish church (St Mary the Virgin) to a design by noted church architect John Loughborough Pearson, heavily influenced by Gothic ideas. It features three massive towers and spires. The central tower and spire is 250 feet tall, the western ones reach 200ft.

Foundation stones were laid in 1880, the first section of the cathedral was consecrated in 1887, with the building finally completed in 1910. In the meantime, Pearson had died in 1897; his work was continued by his son, Frank Loughborough Pearson.