St. Michael's Church (Irish: Eaglais Naomh Mícheál) is a large-scale Roman Catholic church built of limestone located on the south end of Saint Michael's Square, Ballinasloe, County Galway, Ireland.

A revised designed by Augustus Welby Northmore Pugin was started in 1842.

[3] St. Michael's Church is a freestanding gable-fronted Roman Catholic church built of limestone with pitched slate roofs with cut-stone eaves courses.

The front elevation of the side-aisle of the ground floor of the tower has cinquefoil-headed double-light window openings with under carved hood-mouldings.

The opening to the chancel has a pointed arch four-light traceried window with a stained glass.