Template:On this day/21 Juin
- 1503 – Battle of Elmakulak: Shah Ismail I won victory over Sultan Murad Bayandur.
- 1788 – New Hampshire becomes the 9t State tae ratify the Unitit States Constitution.
- 1898 – The Unitit States takes the Paceefic island o Guam frae Spain.
- 1945 – Warld War II: The Battle o Okinawa ends wit victory faer the Allies.
- 2000 – Scotland repeals "Section 28", a law which banned "promotin" homosexuality.
Yingluck Shinawatra (b. 1967) · Alexander Watt (d. 1892) · Oda Nobunaga (d. 1582)