Oughterside and Allerby is a civil parish in the Borough of Allerdale in Cumbria, England. It contains three listed buildings that are recorded in the National Heritage List for England. All the listed buildings are designated at Grade II, the lowest of the three grades, which is applied to "buildings of national importance and special interest". The parish is almost entirely rural, and the listed buildings consist of a bridge, a milestone, and a horse trough.
| Name and location | Photograph | Date | Notes |
|---|---|---|---|
| Spring head and horse trough 54.7553°N -3.4376°W | This consists of a rectangular water trough flanked by sandstone walls about high and long. | ||
| Milestone 54.7556°N -3.4379°W | The milestone was provided for the Wigton to Workington turnpike road. It is a round-topped stone inscribed with the distances in miles to Wigton and Workington. On the top of the milestone is a benchmark. | ||
| Ellenhall Bridge 54.7389°N -3.3738°W | The bridge carries a road over the River Ellen. It is in sandstone, and consists of two segmental arches with a central pier and splayed cutwaters. The bridge has a low parapet with saddleback coping. | ||