1968
Clockwise from top or bottom: 
- Alexander Dubček comes to power in Czechoslovakia, beginning a brief period of democratic reform known as the Prague Spring;
- The USS Pueblo is captured by North Korea, with its crew being held as prisoners of war for nearly a year;
- The Viet Cong launch the Tet Offensive, which is characterized by a series of surprise attacks on South Vietnam;
- Social conflicts over the Vietnam War and racism escalate, leading to worldwide protests and riots;
- Civil rights leader Martin Luther King Jr. is shot and killed outside the Lorraine Motel in Memphis, Tennessee;
- United States politician Robert F. Kennedy is assassinated by a pro-Palestinian nationalist while campaigning for the Democratic presidential nomination at the Ambassador Hotel in Los Angeles, California;
- Warsaw Pact nations invade Czechoslovakia, bringing an end to the Prague Spring;
- Apollo 8 becomes the first human spaceflight to reach the Moon.
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| Gregorian calendar | 1968 MCMLXVIII | 
| Ab urbe condita | 2721 | 
| Armenian calendar | 1417 ԹՎ ՌՆԺԷ | 
| Assyrian calendar | 6718 | 
| Baháʼí calendar | 124–125 | 
| Balinese saka calendar | 1889–1890 | 
| Bengali calendar | 1374–1375 | 
| Berber calendar | 2918 | 
| British Regnal year | 16 Eliz. 2 – 17 Eliz. 2 | 
| Buddhist calendar | 2512 | 
| Burmese calendar | 1330 | 
| Byzantine calendar | 7476–7477 | 
| Chinese calendar | 丁未年 (Fire Goat) 4665 or 4458 — to — 戊申年 (Earth Monkey) 4666 or 4459 | 
| Coptic calendar | 1684–1685 | 
| Discordian calendar | 3134 | 
| Ethiopian calendar | 1960–1961 | 
| Hebrew calendar | 5728–5729 | 
| Hindu calendars | |
| - Vikram Samvat | 2024–2025 | 
| - Shaka Samvat | 1889–1890 | 
| - Kali Yuga | 5068–5069 | 
| Holocene calendar | 11968 | 
| Igbo calendar | 968–969 | 
| Iranian calendar | 1346–1347 | 
| Islamic calendar | 1387–1388 | 
| Japanese calendar | Shōwa 43 (昭和43年) | 
| Javanese calendar | 1899–1900 | 
| Juche calendar | 57 | 
| Julian calendar | Gregorian minus 13 days | 
| Korean calendar | 4301 | 
| Minguo calendar | ROC 57 民國57年 | 
| Nanakshahi calendar | 500 | 
| Thai solar calendar | 2511 | 
| Tibetan calendar | 阴火羊年 (female Fire-Goat) 2094 or 1713 or 941 — to — 阳土猴年 (male Earth-Monkey) 2095 or 1714 or 942 | 
Wikimedia Commons has media related to 1968.
1968 (MCMLXVIII) was a leap year starting on Monday of the Gregorian calendar, the 1968th year of the Common Era (CE) and Anno Domini (AD) designations, the 968th year of the 2nd millennium, the 68th year of the 20th century, and the 9th year of the 1960s decade.