St. Margaret of Cortona's Church is a parish church under the authority of the Roman Catholic Archdiocese of New York, located at 6000 Riverdale Avenue in the Riverdale neighborhood of the Bronx in New York City.

Prior to 1887, Catholics in the Riverdale section of the Bronx attended either St. John's in Kingsbridge or St. Mary's in Yonkers.

The first permanent church was erected on the Southeast corner of Riverdale Avenue and West 260th Street and dedicated August 16, 1891 by Archbishop Corrigan.

Michael J. Murray, who also attended to the Visitation Convent chapel in the parish.

[4] In 1875 the Sisters of Charity opened St. Vincent's Free School on the grounds of Mount St. Vincent for the children of the Irish poor, who worked as domestics on the numerous estates that populated Riverdale at the time.