Waterloo Bridge (Welsh: Pont Waterloo) is an early cast iron bridge, spanning the River Conwy at Betws-y-Coed, in Conwy county borough, north-west Wales.

In 1923, the bridge's masonry abutments were refurbished, and its superstructure was strengthened by encasing the inner three ribs in concrete.

A 7 in (180 mm) reinforced cantilevered concrete deck was also added, which provided extra space for new footways; the cast iron parapet railings were re-erected on the outside of the new footways.

[1] In 1978, a new 10 in (250 mm) reinforced concrete deck was added and the masonry abutments were also strengthened.

[1] In May 1996, the bridge was Grade I listed as "a highly important and imaginatively-designed iron road bridge by Thomas Telford, engineer, a significant example of early iron technology".