| Bridge Name: | Dalguise Viaduct |
| Other Name: | River Tay Viaduct |
| Carries: | Highland Main Line railway |
| Crosses: | River Tay |
| Locale: | Dalguise, Perth and Kinross |
| Design: | Lattice girder |
| Coordinates: | 56.6126°N -3.6391°W |
The Dalguise Viaduct is a lattice girder viaduct in Dalguise, Perth and Kinross, Scotland.[1] It carries the Highland Main Line railway across the River Tay. Built in 1863, it was designed by Joseph Mitchell, for the then-new Inverness and Perth Junction Railway. A Category A listed structure,[2] it stands about north of the now-disused Dalguise railway station.
The viaduct is in two parts; the southern one being, the northern . The ironwork was supplied by Sir William Fairbairn & Sons, of Manchester.