- Jul 1 Rev Martin Niemöller arrested in Nazi Germany for activities against the State
Event of Interest
Jul 1 Spanish bishops support Francisco Franco and his fascist movement

Francisco Franco
- Jul 2 Wimbledon Men's Tennis: Don Budge beats Germany's Gottfried von Cramm 6-3, 6-4, 6-2 for first of back-to-back titles
Event of Interest
Jul 2 Amelia Earhart and Fred Noonan disappear flying over the Pacific Ocean en route to Howland Island. Noonan is declared dead the following year, and Earhart is declared the year after (1939)

Amelia Earhart
- Jul 3 Wimbledon Women's Tennis: Dorothy Round of England beats Poland's Jadwiga Jędrzejowska 6-2, 2-6, 7-5 for her second Wimbledon title
Event of Interest
Jul 3 Del Mar Turf Club, with crooner Bing Crosby as president and actor Pat O'Brien as a club officer, opens for racing

Bing Crosby
- Jul 5 117°F (47°C), Medicine Lake, Montana (state record)
Baseball Record
Jul 5 NY Yankees outfielder Joe DiMaggio hits 20th HR of the season but 1st career grand slam in 8-4 win vs Boston Red Sox

Joe DiMaggio
Event of Interest
Jul 7 5th MLB All Star Game, Griffin Stadium, Washington: AL wins 8-3, Lou Gehrig drives in 4 runs with HR & double

Lou Gehrig
Event of Interest
Jul 10 Dutch Django Reinhardt's "Quintette, premieres in du Hot Club"

Django Reinhardt
Election of Interest
Jul 22 Irish premier Eamon de Valera wins elections

Éamon de Valera

Franklin D. Roosevelt
- Jul 23 Isolation of pituitary hormone announced (Yale University)
- Jul 24 Alabama drops charges against 5 blacks accused of rape in Scottsboro
- Jul 25 31st Tour de France won by Roger Lapebie of France
- Jul 26 End of the Battle of Brunete in the Spanish Civil War.
- Jul 27 32nd Davis Cup: USA beats Great Britain in Wimbledon (4-1)
- Jul 27 International Lawn Tennis Challenge, Wimbledon: GB 4 title streak ends as American Frank Parker beats Charles Hare 6-2, 6-4, 6-2 for an unbeatable 3-1 lead; ends 4-1
- Jul 28 Eddie Paynter scores 322 for Lancashire against Sussex
- Jul 28 Richard Moore scores 316 for Hampshire against Warwickshire
- Jul 29 Japanese troops occupies Peking and Tientsin
- Jul 29 Tongzhou Incident: East Hopei Army mutinies against Japanese troops and civilians
- Jul 30 Phillies Dolph Camilli, plays 1st base and registers no put outs
- Jul 30 Russian Politburo issues NKVD Order no. 00447, to repress former kulak and anti-soviets, 269,100 to be arrested, 76,000 to be shot. Part of the Great Purge.