- Sep 1 1st female telephone operator starts work, Emma Nutt for the Edwin Holmes Telephone Despatch Company in Boston
- Sep 2 Surrey left-arm slow round-arm bowler Ted Barratt takes 10-43 for the Players in Australia's 1st innings in a cricket tour match on his home ground at The Oval; all ten are caught or stumped; Australia wins by 8 runs
- Sep 3 British passenger paddle steamer Princess Alice sunk in a collision on the River Thames with the collier Bywell Castle; 645 die
- Sep 12 Cleopatra Needle installed in London
- Sep 25 British physician Dr. Charles Drysdale warns against the use of tobacco in a letter to The Times newspaper in one of the earliest public health announcements on the dangers of smoking
- Sep 30 1st Portuguese immigrants arrive in Hawaii
- Sep 30 Great Flood hits New Zealand's South Island
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