Portal:Belgium/Anniversaries/April/April 9
- 688: death of Waltrude, patron saint of Mons
- 1835: birth of Leopold II, King of the Belgians (pictured)
- 1895: birth of Clément Doucet, pianist
- 1918: start of the Battle of the Lys during World War I
- 1973: birth of Bart Goor, soccer player with 67 appearances for the Belgium national football team