The Central Ontario Railway (COR) was a former railway that ran north from Trenton, Ontario to service a number of towns, mines, and sawmills. Originally formed as the Prince Edward County Railway in 1879, it ran between Picton and Trenton, where it connected with the Grand Trunk Railway that ran between Montreal and Toronto. After being purchased by a group of investors and receiving a new charter to build northward, the company was renamed the Central Ontario Railway in 1882, and it started building towards the gold fields at Eldorado and newly discovered iron fields in Coe Hill.