- Apr 3 Christian Günther von Bernstorff, Danish-Prussian statesman and diplomat, born in Copenhagen, Denmark (d. 1835)
- Apr 11 Johann Georg Lickl, Austrian organist, kapellmeister, and composer, born in Korneuburg, Lower Austria (d. 1843)
- Apr 12 Giovanni Agostino Perotti, Italian composer, born in Vercelli, Kingdom of Sardinia (now Italy) (d. 1855)
- Apr 13 Thomas Lawrence, English portrait painter, born in Bristol, England (d. 1830)
- Apr 25 Marc Isambard Brunel, French-born English engineer (Thames Tunnel), born in Hacqueville, France (d. 1849)