Josephine Baker
Oct 2 Josephine Baker first performs in Paris in La Revue Nègre at the Théâtre des Champs-Élysées
Heilmann Pips Cobb
Oct 4 Harry Heilmann gets 6 hits in Detroit's doubleheader sweep over St Louis Browns, 10-4 and 11-6, to edge Tris Speaker for AL batting crown, .393 to .389; Ty Cobb bats over .300 for the 20th time
- Oct 5 The Lacarno Conference meets: Germany agrees to recognise their frontiers with France and Belgium and will apply for membership in the League of Nations
- Oct 5 WSM-AM in Nashville Tenn begins radio transmissions
- Oct 6 Greek premier Papanastasiou orders gen Pangulos arrested
- Oct 11 Belgian episcopelian speaks against Flemish activism
- Oct 11 NY Giants play 1st NFL game, lose to Providence 14-0
- Oct 12 Albert Michelsen runs world record marathon (2:19:01.8)
- Oct 12 German-Russian trade agreement signed
- Oct 14 Anti-French uprising in Damascus (French inhabitants flee)
- Oct 15 Baseball World Series: Pittsburgh Pirates beat Washington Senators, 9-7 in Game 7 at Forbes Field for 4-3 series victory; Pirates first team to recover from 3–1 deficit in a 7-game series
- Oct 15 Willem Landré's opera "Beatrice" premieres in The Hague
- Oct 16 Peace accord of Locarno signed (Rhine Pact)
- Oct 16 Texas School Board prohibits teaching of evolution
- Oct 18 -20] French Gen Sarrail bombs Damascus
Lazzeri Hits 60
Oct 18 Salt Lake City (PCL) Tony Lazzeri hits his 60th HR of the season
- Oct 19 Italian army takes Somalia
- Oct 21 Sidney Howards "Lucky Sam McGarver" premieres in NYC
- Oct 25 Lester Patrick takes over NY Rangers
- Oct 25 Rightist German ministers disavows Treaty of Locarno
- Oct 27 Water skis patented by Fred Waller
- Oct 30 KUT-AM in Austin TX begins radio transmissions
- Oct 31 Cossack officer Reza Chan replaces sultan Ahmad as Shah of Persia
Admirals
Aviators
Gangsters
Generals
Industrialists
Suffragists