John de Bermingham (died 1547) was an Anglo-Irish lord.
John succeeded upon the death of his father, Meiler.
During his lifetime, Athenry began to decline in response to warfare with Clanricarde to the south-east, the Ó Ceallaigh of Uí Maine to the east, and the Ó Conchobhairs and Mac Diarmadas of Síol Muiredaig and Moylurg.
Its trade had been secondary to Galway, yet as late as 1540 the town was well-populated and featuring new buildings, indicating that John's era enjoyed some prosperity.
A notable feature of his lordship is the North Gate of Athenry, which is believed to have been built in his time.