1866 Memphis massacre of 1866 Panic of 1866 Civil Rights Act of 1866 1866 in the United States 1866 United States elections 1866 great fire of Portland, Maine Sanitary Act 1866 1866 Sisyphus 1866 State of the Union Address Cretan revolt (1866–1869) Orissa famine of 1866 1866 Liverpool Town Council election Finnish famine of 1866–1868 1866 New York state election Liberal government, 1859–1866 London Conference of 1866 1866 Atlantic hurricane season 1866 in France 1866–67 United States House of Representatives elections New Orleans Massacre of 1866 1866–67 Barnes F.C. season Girls' School Committee of 1866 18…

866 in Canada 1866 Massachusetts legislature 1866 Carroll Pioneers men's soccer team 1866–67 United States Senate elections Félix Baciocchi (1803–1866) 1866 in sports Battle of Custoza (1866) 1866 Oregon gubernatorial election 1866 Pennsylvania gubernatorial election 1866 Mount Herbert by-election 1866 Eye by-election 1866 New Brunswick general election 1866 West Virginia gubernatorial election Election to the Romanian throne, 1866 1866 in the United Kingdom Colony of British Columbia (1866–1871) Peace of Prague (1866) 1866 Belgian general election 1866 Williams colonial by-election 1866 Ipswich colonial by-election

Naval operations on Lake Garda (1866) April 1866 Williams colonial by-election 1866 Port Chalmers by-election 1866 Texas gubernatorial election January 1866 Williams colonial by-election 1866 East Suffolk by-election 1866 New Orleans mayoral election John Dundas (1808–1866) 1866 New Zealand general election Battle of Boquerón (1866) Great Tea Race of 1866 September 1866 Clermont colonial by-election 1866 Costa Rican general election SS Deutschland (1866) February 1866 Brecon by-election Erik af Klint (1816–1866) 1866 Romanian prince referendum 1866 Chilean presidential election 1866 Swiss referend