St. John's Day may refer to:

Feasts celebrating the Nativity of Saint John the Baptist:

• January 7, an Eastern Orthodox feast
• June 24, Midsummer Day
  • an Eastern Orthodox feast celebrating his birth
  • a Roman Catholic, Lutheran and Anglican feast celebrating his birth
    • Fête St-Jean-Baptiste
    • Festival of San Juan
    • Saint Jonas Day
    • Jaaniõhtu
    • Festa Junina
    • See also Saint John's Eve
• August 29, an Eastern Orthodox feast commemorating his beheading
• September 23
  • an Eastern Orthodox feast celebrating his conception
  • a Roman Catholic and Lutheran feast celebrating his conception
• Thout 2, a Coptic Orthodox feast
• Dehwa Daimana (Mandaean feast): 1st day of Hiṭia, the 11th month of the Mandaean calendar

Feasts celebrating John the Evangelist

• December 27, a Roman Catholic, Lutheran, and Anglican feast
• May 8, an Eastern Orthodox feast

• Saint John's Day

This disambiguation page lists articles associated with the title St. John's Day.
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