- Aug 1 Brooklyn Superbas MLB pitcher Harry McIntire no-hits Pittsburgh for 10 2/3 innings but loses in 13th, 1-0 on an unearned run
- Aug 2 Chicago White Sox beat Boston Americans, 3-0 to start AL record 19 game MLB win streak
- Aug 3 Washington Nationals' Tom Hughes becomes first MLB pitcher to win a 1-0 extra innings game off his own home run in 10th v St. Louis Browns
- Aug 10 Pope Pius X bans Associations cults
- Aug 13 Black soldiers raid Brownsville, Texas
- Aug 13 Cub's Pitcher Jack Taylor ends a string of completing 202 games (187 complete, 15 relief) by Dodgers in 3rd inning
- Aug 15 1st freight delivery tunnel system begins, underneath Chicago
Event of Interest
Aug 15 King Edward VII of Great Britain visits German Emperor Wilhelm II to discuss the escalating rivalry between their nations' naval forces
Wilhelm II
- Aug 16 -17] 8.6 earthquake destroys Valparaiso Chile, fire kills 20,000
- Aug 22 1st Victor Victrola manufactured
- Aug 23 Chicago White Sox win 19th straight, beating Washington Senators
- Aug 23 Cuba's 1st president Tomés Estrada Palma asks for US intervention
- Aug 24 Cincinnati Red John Weimer no-hits Dodgers, 1-0 in 7 inning game
- Aug 29 26th U.S. Men's National Championship: William Clothier beats Beals Wright (6-3, 6-0, 6-4)
- Aug 30 Hal Chase becomes 1st NY Yankee to hit three triples in a game
- Aug 30 NY Highlander Joe Doyle debuts pitching back-to-back shut-outs