San Isidro District may refer to:

• Peru
  • San Isidro District, Lima, a district of the Lima province
• Costa Rica
  • San Isidro District, Alajuela, in Alajuela (canton), Alajuela province
  • San Isidro District, Atenas, in Atenas (canton), Alajuela province
  • San Isidro District, El Guarco, in El Guarco (canton), Cartago province
  • San Isidro District, Grecia, in Grecia (canton), Alajuela province
  • San Isidro District, León Cortés, in León Cortés (canton), San José province
  • San Isidro District, Montes de Oro, in Montes de Oro (canton), Puntarenas province
  • San Isidro District, San Isidro, in San Isidro (canton), Heredia province
  • San Isidro District, San Ramón, in San Ramón (canton), Alajuela province
  • San Isidro District, Vásquez de Coronado, in Vásquez de Coronado (canton), San José province
  • San Isidro del El General District, in Pérez Zeledón (canton), San José province

• Bishop of Patna of the Church of North India
• Bishop of Pedena
• Bishop of Pelotas
• Bishop of Penang
• Bishop of Penne e Atri
• Bishop of Peoria
• Bishop of Persia
• Bishop of Peru
• Bishop of Pettino
• Bishop of Philippopolis of Arabia
• Bishop of Phulbani
• Bishop of Phulbani (Church of North India)
• Bishop of Phulbani (CNI)
• Bishop of Phulbani of the Church of North India
• Bishop of Pienza
• Bishop of Pienza e Montalcino
• Bishop of Pinheiro
• Bishop of Pistoia e Prato
• Bishop of Pitinum
• Bishop of Ploaghe
• Bishop of Polignano
• Bishop of Pontremoli
• Bishop of Poona
• Bishop of Poona (Church of North India)
• Bishop of Poona (CNI)