|Centuries:||18th century – 19th century – 20th century|
|Decades:||1770s 1780s 1790s – 1800s – 1810s 1820s 1830s|
|Years:||1802 1803 1804 – 1805 – 1806 1807 1808|
This is a page showing numismatic events that occurred in 1805.
- The Italian Republic is disestablished.
- The Kingdom of Italy is established.
- The Ligurian Republic is disestablished.
- The Sierra Leonean dollar discontinues circulation.
- February 26: Franz Seraph Streber, German numismatist
- July 7: Johann Gustav Stickel, German numismatist.