Patrick O'Reilly may refer to:

• Patrick O'Reilly (Independent politician) (1893–1972), Irish independent politician represented Cavan, 1948–51
• Patrick O'Reilly (Longford politician) (1911–2003), Irish Fianna Fáil politician, member of the Senate, 1944–69
• Patrick O'Reilly (Cavan politician) (1927–1994), Irish Clann na Talmhan/Fine Gael politician represented Cavan, 1943–73
• Patrick O'Reilly (priest) (1843–1914), Catholic priest and educationalist
• Patrick J. O'Reilly (born 1980), Irish actor, director and writer
• Patrick J. O'Reilly (politician) (died 1965), Irish politician, member of the 5th Senate
• Patrick F. O'Reilly, Irish politician, member of the 7th Senate
• Patrick Thomas O'Reilly (1833–1892), Roman Catholic bishop of Springfield, Massachusetts

• Balmoral Jr Secondary School
• Balmoral, Louisiana
• Balmoral-Maltais
• Balmoral, Manitoba
• Balmoral, Maryland
• Balmoral Mills, Nova Scotia
• Balmoral Mounds
• Balmoral, Mpumalanga
• Balmoral Phase
• Balmoral railway station, New South Wales
• Balmoral Ridge, Queensland
• Balmoral Shire
• Balmoral Shire Council
• Balmoral Shopping centre
• Balmoral Show
• Balmoral South mine
• Balmoral Stadium
• Balmoral-St. Maure
• Balmoral - St. Maure, New Brunswick
• Balmoral tartan
• Balmoral, Tennessee
• Balmoral (typeface)
• Balmoral(typeface)
• Balmoral, Wisconsin
• Balmorhea (album)