- Aug 1 Canada begins replacing silver with nickel in coins
- Aug 1 Cleveland Metroparks begins operating Zoo (Cleveland, Ohio)
- Aug 1 WXIX TV channel 19 in Cincinnati-Newport, OH (IND) begins broadcasting
- Aug 1 The coronation is held of Hassanal Bolkiah, the 29th Sultan of Brunei.
- Aug 2 35th Chicago College All-Star Game: Green Bay 34, All-Stars 17, 69,917 at Soldier Field
- Aug 2 Ron Hansen (Washington Senators) & Tim Cullen (Chicago White Sox) become the first MLB players to be traded for each other twice in the same season; they had been traded in February in opposite directions
- Aug 3 France performs nuclear test at Mururoa atoll
Music History
Aug 3 100,000 attend two-day Newport Pop Festival in Costa Mesa, California; performers included Alice Cooper, Canned Heat, The Chambers Brothers, Country Joe and the Fish, Paul Butterfield Blues Band, Sonny & Cher, Steppenwolf, Tiny Tim, The Animals, Grateful Dead, Jefferson Airplane, Quicksilver Messenger Service, and The Byrds
Presidential Convention
Aug 8 Republican convention in Miami Beach nominates Richard Nixon for president
Sports History
Aug 11 Satchel Paige (62) and needing 158 days on a MLB payroll to qualify for a pension, is signed by Atlanta Braves; doesn't pitch and becomes coach
- Aug 11 Fifteen Guinea Special - last main-line steam passenger train service in Britain. Selection of British Rail steam locomotives make a return 120-mile journey Liverpool to Carlisle, before having their fires dropped for the last time.
- Aug 14 Montreal Expos officially become a member of NL
- Aug 15 Pirate Radio Free London begins transmitting
Historic Event
Aug 15 Romanian president Nicolae Ceausescu visits Prague
Warsaw Pact Invasion of Czechoslovakia
Aug 20 During the night 250,000 Soviet and Warsaw Pact troops invade Czechoslovakia in response to the Prague Spring
Presidential Convention
Aug 21 Democratic Convention opens in Chicago, goes on to nominate Hubert Humphrey
- Aug 21 PFC James Anderson Jr is 1st African American Marine to win Medal of Honor (Vietnam War)
Historic Event
Aug 21 Warsaw Pact forces complete their invasion of Czechoslovakia by arresting the Czech leader Alexander Dubček and forcing him to sign the Moscow Protocols
- Aug 21 William Dana reaches 80 km (last high-altitude X-15 flight)
- Aug 22 The Society of Labour Lawyers (SLL) publishes an 'interim report' about alleged discrimination in Northern Ireland; the report is heavily criticised by unionists.
- Aug 23 Ringo quits Beatles over a disagreement (temporarily).
- Aug 23 Yanks & Tigers play 3-3 tie in 19 due to 1 AM curfew
- Aug 24 France becomes the world's fifth thermonuclear power with a detonation on Mururoa Atoll in the South Pacific
- Aug 24 Northern Ireland's first civil rights march held; many more marches would be held over the following year and Loyalists organized counter-demonstrations to get the marches banned
Sports History
Aug 25 Arthur Ashe becomes 1st African American to win the US singles championship
Sports History
Aug 25 NY Yankee outfield Rocky Colavito pitches second 2/3 innings and beats Tigers 6-5; he played right field in second game and homered
- Aug 25 29th Venice Film Festival: "Artists Under the Big Top: Perplexed" directed by Alexander Kluge wins Golden Lion
- Aug 26 "Hey Jude" single released by the Beatles in US (Billboard Song of the Year 1968, Billboard 10th biggest song of all time 2013)
- Aug 27 Protest by the Derry Housing Action Committee (DHAC) at the Guildhall's council chamber; after which Eamon Melaugh phones the Northern Ireland Civil Rights Association (NICRA) to organise a march in Derry
- Aug 28 Police & anti-war demonstrators clash at Chicago's Democratic National Convention
- Aug 28 Northern Irish MP Gerry Fitt tables a House of Commons motion criticising the Royal Ulster Constabulary at Dungannon, "citizens of Northern Ireland should be allowed the same rights of peaceful demonstration as those in other parts of the United Kingdom"
Tennis Open
Aug 29 First match in the US Open tennis era; on her way to the final, Billie Jean King beats fellow American Dr Vija Vuskains 6-1, 6-0
Music History
Aug 31 Private Eye magazine reports a John Lennon and Yoko Ono album will have a picture of them nude on the cover
