Year 1864 (MDCCCLXIV) was a leap year starting on Friday of the Gregorian Calendar (or a leap year starting on Wednesday of the 12-day slower Julian calendar).
- August 13 – The first fish and chips shop opens in London.
Year 1864 (MDCCCLXIV) was a leap year starting on Friday of the Gregorian Calendar (or a leap year starting on Wednesday of the 12-day slower Julian calendar).