| Years |
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| Millennium |
| 2nd millennium |
| Centuries |
| Decades |
| Years |
| 1688 by topic |
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| Arts and science |
| Leaders |
| Birth and death categories |
| Births – Deaths |
| Establishments and disestablishments categories |
| Establishments – Disestablishments |
| Works category |
1688 (MDCLXXXVIII) was a leap year starting on Thursday of the Gregorian calendar and a leap year starting on Sunday of the Julian calendar, the 1688th year of the Common Era (CE) and Anno Domini (AD) designations, the 688th year of the 2nd millennium, the 88th year of the 17th century, and the 9th year of the 1680s decade. As of the start of 1688, the Gregorian calendar was 10days ahead of the Julian calendar, which remained in localized use until 1923.