The Paisley and Renfrew railway was an early Scottish railway company that constructed and operated a line between Paisley and the River Clyde at Renfrew Wharf, enabling journeys between Glasgow and Paisley by connecting river boat. The railway was built to the track gauge of 4 ft 6 in (1,372 mm) on stone block sleepers. The line opened in 1837 and used locomotive power at first. Its operating costs were much higher than expected, and its income was disappointing, and horse traction was used to save expenditure.