1886 was a year in the 19th century.
- Unknown Date in Summer: The Shonash Ravine Bridge was completed.
- Date Unknown: Jules Brown is born to Emmett Brown and Clara Clayton Brown. Assuming that Clara and Doc waited until their honeymoon (December 15, 1885) to consummate their relationship, Jules would not have been born until at least September.
- Date Unknown: In the animated series episcde Go Fly a Kite, Clara mentions that she travelled to "McGregor's Market in 1886" in order to buy the maize that she serves at dinner in 1991.