Monmouth Mayhill railway station (alternatively Monmouth May Hill railway station) is a disused railway station on the Ross and Monmouth Railway which was opened in 1873 and closed in 1959. It was one of two stations that served the town of Monmouth, Wales and was situated on the opposite bank of the river River Wye from Monmouth. It was the initial terminus of the line, but the line was extended across the River Wye to the junction station of Monmouth Troy in 1874 with the construction of the Duke of Beaufort Bridge.