| 20221 | February 21 | Death | 2012 – Barney Rosset, American publisher (b. 1922) |
| 20222 | February 21 | Death | 2013 – Hasse Jeppson, Swedish footballer (b. 1925) |
| 20223 | February 21 | Death | 2013 – Masahiro Kanagawa, Japanese murderer (b. 1983) |
| 20224 | February 21 | Death | 2013 – Kaoru Kobayashi, Japanese criminal (b. 1968) |
| 20225 | February 21 | Death | 2013 – Magic Slim, American singer and guitarist (b. 1937) |
| 20226 | February 21 | Death | 2014 – Héctor Maestri, Cuban-American baseball player (b. 1935) |
| 20227 | February 21 | Death | 2014 – Matthew Robinson, Australian snowboarder (b. 1985) |
| 20228 | February 21 | Death | 2014 – Cornelius Schnauber, German–American historian, playwright, and academic (b. 1939) |
| 20229 | February 21 | Death | 2014 – John Strawson, English general (b. 1921) |
| 20230 | February 21 | Death | 2015 – Aleksei Gubarev, Russian general, pilot, and astronaut (b. 1931) |
| 20231 | February 21 | Death | 2015 – Robert O. Marshall, American businessman (b. 1939) |
| 20232 | February 21 | Death | 2015 – Sadeq Tabatabaei, Iranian journalist and politician (b. 1943) |
| 20233 | February 21 | Death | 2015 – Clark Terry, American trumpet player, composer, and educator (b. 1920) |
| 20234 | February 21 | Holiday and observance | Christian feast day:Pepin of LandenPeter DamianRandoald of GrandvalFebruary 21 (Eastern Orthodox liturgics) |
| 20235 | February 21 | Holiday and observance | International Mother Language Day (UNESCO) |
| 20236 | February 21 | Holiday and observance | Language Movement Day (Bangladesh) |
| 20237 | February 21 | Holiday and observance | The first day of the Birth Anniversary of Fifth Druk Gyalpo, celebrated until February 23 (Bhutan) |
| 20238 | February 21 | Holiday and observance | The first day of the Musikahan Festival, celebrated until February 27 (Tagum City, Philippines) |
| 20239 | February 22 | Event | 705 – Empress Wu Zetian abdicates the throne, restoring the Tang dynasty. |
| 20240 | February 22 | Event | 1316 – Battle of Picotin between Ferdinand of Majorca and the forces of Matilda of Hainaut |
| 20241 | February 22 | Event | 1371 – Robert II becomes King of Scotland, beginning the Stuart dynasty. |
| 20242 | February 22 | Event | 1495 – King Charles VIII of France enters Naples to claim the city's throne. |
| 20243 | February 22 | Event | 1632 – Galileo's Dialogue Concerning the Two Chief World Systems is published. |
| 20244 | February 22 | Event | 1651 – St. Peter's Flood: A storm surge floods the Frisian coast, drowning 15,000 people. |
| 20245 | February 22 | Event | 1744 – War of the Austrian Succession: The Battle of Toulon begins. |
| 20246 | February 22 | Event | 1797 – The Last Invasion of Britain begins near Fishguard, Wales. |
| 20247 | February 22 | Event | 1819 – By the Adams–Onís Treaty, Spain sells Florida to the United States for five million U.S. dollars. |
| 20248 | February 22 | Event | 1821 – Greek War of Independence: Alexander Ypsilantis crosses the Prut river at Sculeni into the Danubian Principalities. |
| 20249 | February 22 | Event | 1847 – Mexican–American War: The Battle of Buena Vista – 5,000 American troops defeat 15,000 Mexicans. |
| 20250 | February 22 | Event | 1848 – The French Revolution of 1848, which would lead to the establishment of the French Second Republic, begins. |