Patrick Casey (or Pat or Paddy) may refer to:
Patrick Casey (bishop of Ross, Ireland) (1873–1940), Irish Roman Catholic bishop Patrick Casey (bishop of Brentwood) (Patrick Joseph Casey, 1913–1999), English bishop Patrick Casey (rugby union) (Patrick Joseph Casey, born 1941), Irish rugby union player Pat Casey (baseball) (born 1959), American baseball coach Pat Casey (politician) (born 1962), Irish politician Patrick J. Casey, American biochemist and molecular pharmacologist Pat Casey, CTO and EVP of DevOps Servicenow Paddy Casey (born 1975), Irish musician Patrick Casey (writer) (born 1978), American writer and actor Patrick Casey (white supremacist) (born 1989), American neo-Nazi Patrick Casey (runner) (born 1990), American middle-distance runner Pat Casey (BMX) (1993–2023), American freestyle BMX rider Patrick Casey (footballer) (born 2006), Irish footballer