- Oct 1 12 Nazi war criminals sentenced to death in Nuremberg
Baseball Record
Oct 1 Cleveland Indians pitcher Bob Feller claims his MLB record 348th strikeout of season in a 4-1 win over Detroit; record stands for 19 years
- Oct 1 St. Louis Cardinals beats Brooklyn Dodgers, 4-2 in first MLB play-off game for a league championship (NL); St Louis wins series, 2-0
- Oct 2 1st network soap opera "Faraway Hill" begins broadcasting on DuMont Television Network
- Oct 5 "Yours Is My Heart" closes at Shubert Theater NYC after 36 performances
- Oct 5 1st Cannes Film Festival ends
- Oct 5 Newcastle United equals English Football League record for biggest winning margin in a 13-0 thrashing of Newport in a Division 2 match at St. James' Park; Len Shackleton scores 6, Charlie Wayman 4 for the Toon
- Oct 6 90°F highest temperature ever recorded in Cleveland in Oct
- Oct 6 US President Harry Truman questions Great Britain Jews about Palestine
String Quartet No. 2
Oct 7 Charles Ives' 2nd string quartet premieres
- Oct 8 Military plane crashes at Christian HBS, 24 die
The Iceman Cometh
Oct 9 Eugene O'Neill's play "The Iceman Cometh" premieres in NYC
- Oct 9 First electric blanket manufactured; sold for $39.50
- Oct 10 Max Frisch's play "Die Chinesische Mauer" (The Chinese Wall) premieres in Zürich
- Oct 11 New York Yankees trade infielder Joe Gordon to Cleveland Indians for pitcher Allie Reynolds
- Oct 14 Netherland & Indonesia sign cease fire
- Oct 15 Baseball World Series: St Louis Cardinals beat Boston Red Sox, 4-3 at Sportsman's Park to clinch series, 4 games to 3; Cards 6th championship
Nuremberg Trials
Oct 16 10 Nazi leaders are hanged as war criminals after Nuremberg war trials, including Wilhelm Keitel, Joachim von Ribbentrop and Alfred Jodl
Copland's 3rd Symphony
Oct 18 Aaron Copland's 3rd Symphony first performance, with the Boston Symphony Orchestra led by Serge Koussevitzky
- Oct 20 Frank Seno returns kickoff 105 yd, Chicago Cards vs NY Giants
- Oct 22 2 British ships sink near Albania
- Oct 23 UN General Assembly 2nd session convenes (1st NYC-Flushing Meadows)
- Oct 24 A camera on board the V-2 No. 13 rocket, launched from Whites Sands US, takes the first photograph of earth from outer space.
- Oct 24 Netherlands & Indonesia sign cease fire
- Oct 27 Georgi Domitrovs National Front wins Bulgaria elections (78%)
- Oct 28 German rocket engineers begin work in USSR
Admirals
Aviators
Gangsters
Generals
Industrialists
Suffragists