Sacred Heart Parish (Polish: Parafia Najświętszego Serca Pana Jezusa w New Britain) is a Catholic parish designated for Polish immigrants in New Britain, Connecticut.

It is one of the oldest Polish-American Roman Catholic parishes in New England in the Archdiocese of Hartford.

On August 10, 1894, the New Britain Polish Catholic community became a mission of the Archdiocese's oldest Polish Catholic parish, St. Stanislaus Parish, Meriden.

Initially, the Polish-born priest's new parish was named St. Casimir the King, but this name was officially changed in 1896 to honor the Sacred Heart.

The original Sacred Heart Church, located on Orange St., was dedicated by Bishop Michael Tierney on October 4, 1896.